Mining 101

A VERY GOOD GUIDE ON HOW TO BUILD A BITCOIN MINING RIG CLUSTER + Other Miners

Today you need ASIC to mine Bitcoin

10 steps to implement and deploy your Bitcoin Mining Rigs
  • 1. Setup bitcoin mining pool accounts Assuming you are not solo mining, you will need to create account with 1 or more bitcoin mining pools. Discussed insection 12.
  • 2. Find a location for your bitcoin miners You will need to find a good place that you can keep your bitcoin mining rigs. Somewhere they will not be bothered. No kids, pets, weather, or other interferences.
  • 3. Ensure location quality / resources (Internet, power, cooling) You will need to ensure that wherever you keep you bitcoin mining rigs you have: An internet connection, enough power, and a suitable operating temperature with enough airflow. Discussed in section 6, 7, and 8.
  • 4. Asses your budget Determine how much money you have, and want to invest in bitcoin miners. Weigh the profit, loss, and risks. Discussed in section 2, and 3.
  • 5. Decide on hardware and purchase hardware You will need to select and purchase the best hardware according to your budget. All this is explained in section 4.
  • 6. Build, configure, and test bitcoin rigs You will need to be capable of building these machines from scratch. Without the knowledge of building computers, it is going to be difficult to be successful in running your own bitcoin mining rig. You must know the ins and outs of these beasts. Also discussed in section 4.
  • 7. Obtain and implement software and scripts There are many options to choose from. Will you be using Windows, or Linux? What kind of Bitcoin mining software will you choose? Will you decide to automate your bitcoin mining rigs? The questions will never end. Learn more in section 11.
  • 8. Setup bitcoin proxy Now that you have everything setup, you could centralize everything using a bitcoin proxy. This will always keep your login information the same, and allow you to manage mining pools and workers very easily. Discussed in section 13.
  • 9. Deploy Finally, deploy your bitcoin miners, and start generating bitcoins!
  • 10. Overclock When everything is running smoothly, get even more performance out of your GPUs by overclocking them. Discussed in section 9.
WHAT IS BITCOIN MINING?
INVESTMENT
RETURN ON INVESTMENT (ROI)
HARDWARE
GPU MINING
NETWORKING
COOLING
POWER
OVERCLOCKING
MANAGING
SOFTWARE
BITCOIN MINING POOLS
BITCOIN PROXY

Some of these answers were derived from https://en.bitcoin.it/wiki/ under the Creative Commons Attribution 3.0 license.

Explaining Bitcoin mining…
1.1 WHAT IS BITCOIN MINING?

Simple definition: Bitcoin mining is the process of creating or generating new Bitcoins.

Technical definition: Mining is the process of spending computation power to find valid blocks and thus create new Bitcoins. Technically speaking, mining is the calculation of a hash of the a block header, which includes among other things a reference to the previous block, a hash of a set of transactions and a nonce. If the hash value is found to be less than the current target (which is inversely proportional to the difficulty), a new block is formed and the miner gets 50 newly generated Bitcoins. If the hash is not less than the current target, a new nonce is tried, and a new hash is calculated. This is done millions of times per second by each miner.

Common question: Is mining used for some useful computation? The computations done when mining are internal to Bitcoin and not related to any other distributed computing projects. They serve the purpose of securing the Bitcoin network, which is useful. 1.4WHY WOULD I WANT TO MINE FOR BITCOINS? Good question! Here are some of my reasons:

For fun Building Bitcoin mining rigs is fun, well, if you a geek. I have thoroughly enjoyed the entire process of building, configuring, testing, and occasionally fist fighting with these machines. Okay, but now the real reason…

Money If anyone tells you otherwise, the real reason why everyone wants to mine for bitcoins is because you can make money! Yes, that’s right… How you ask? Well, it’s very simple, currently there are millions of US Dollars, British Pounds, and Euros being traded for bitcoins everyday through online marketplaces! In these systems, users place buys and sells themselves on the exchange and the price is set by the market. The exchange usually acts as a mutual platform between the 2 parties holding people’s funds and performing the trade. The exchange may take a small percent or charge a fee on withdrawals/deposits as their cost. Not only that, there are plenty of online stores that accept bitcoin as currency. You can buy things like electronics, books, music, games, clothing, and more! Without going into too much detail, you can get all the nitty gritty right here:https://en.bitcoin.it/wiki/Trade

WHAT IS A BITCOIN MINING RIG? A mining rig is a computer system used for mining Bitcoins. The rig might be a dedicated miner where it was procured, built and operated specifically for mining or it could otherwise be a computer that fills other needs, such as performing as a gaming system, and is used to mine only on a part-time basis. You should read this wiki page for more detailed information, and example Bitcoin mining rig configurations: https://en.bitcoin.it/wiki/Mining_rig

WHAT IS GPU MINING? GPU mining is the process of using a graphics card (also known as a video card or graphics card) for Bitcoin computations. GPU mining has become the primary form of generating new bitcoins, as appose to using a CPU. The GPU, or graphics processing unit, is a part of the video rendering system of a computer. The typical function of a GPU is to assist with the rendering of 3D graphics and visual effects so that the CPU doesn’t have to.

WHAT IS CPU MINING? CPU mining is the process of using a a CPU for Bitcoin computations. CPU mining has become less common since GPU mining has been found to be up to 800+ times faster. The CPU, or central processing unit is usually a removable component that plugs into the computer’s main circuit board, or motherboard and sits underneath a large, metallic heat sink which usually has a fan, a few are cooled by water. A CPU is designed primarily to be an executive and make decisions, as directed by the software. For example, if you type a document and save it, it is the CPU’s job to turn your document into the appropriate file type and direct the hard disk to write it as a file. CPU’s can also do all kinds of math, as inside every CPU is one or more “Arithmetic/Logic Units” (ALU’s). CPU’s are also highly capable of following instructions of the “if this, do that, otherwise do something else”. A large bulk of the structures inside a CPU are concerned with making sure that the CPU is ready to deal with having to switch to a different task on a moment’s notice when needed. CPU’s also have to deal with quite a few other things which add complexity, including:

  • enforcing privilege levels and the boundaries between user programs and the operating system
  • creating the illusion of “virtual memory” to programs
  • for the most popular processors, being backwards compatible with legacy code
  • 1.6WHY A GPU MINES FASTER THAN A CPU

Some Bitcoin users might wonder why there is a huge disparity between the mining output of a CPU versus a GPU. A GPU is like a CPU, but there are important internal differences that make them suited toward their special tasks. These are the differences that make Bitcoin mining far more favorable on a GPU. A CPU core can execute 4 32-bit instructions per clock (using a 128-bit SSE instruction) or 8 via AVX (256-Bit), whereas a GPU like the Radeon HD 5970 can execute 3200 32-bit instructions per clock (using its 3200 ALUs or shaders). This is a difference of 800 (or 400 in case of AVX) times more instructions per clock. As of 2011, the fastest CPUs have up to 6, 8, or 12 cores and a somewhat higher frequency clock (2000-3000 MHz vs. 725 MHz for the Radeon HD 5970), but one HD5970 is still more than five times faster than four 12-core CPUs at 2.3GHz (which would also set you back about $4700 rather than $350 for the HD5970). A GPU is very different. Yes, a GPU can do math, and can also do “this” and “that” based on specific conditions. However, GPUs have been designed so they are very good at doing video processing, and less executive work. Video processing is a lot of repetitive work, since it is constantly being told to do the same thing to large groups of pixels on the screen. In order to make this run efficiency, video processors are far heavier on the ability to do repetitive work, than the ability to rapidly switch tasks. GPUs have large numbers of ALU’s, more so than CPU’s. As a result, they can do large amounts of bulky mathematical labor in a greater quantity than CPU’s. For more info on this topic go here: https://en.bitcoin.it/wiki/Why_a_GPU_mines_faster_than_a_CPU Investment

HOW MUCH MONEY DO I HAVE TO INVEST? Ahh, this is a good question I am often asked, and it can be interpreted 2 different ways:

a. How much money do I actually have available to invest in Bitcoin mining? Well, it’s pretty obvious that only you know the answer to that question. If you can’t answer this question, I suggest you login to your online banking and start keeping better track of your finances ;)

b. How much money is required in order for me to start mining for Bitcoins? This was the question you were probably referring to. And unfortunately, there is no single answer to this question. Assuming you have a computer, you can already begin mining for Bitcoins! Yes that is correct! Using your current computers CPU, or GPU you can actually begin generating Bitcoins using various available free software (depending on your operating system). The bad news is that unless you have done the research or actually customized your computer for this type of performance, chances are that you really won’t be able to generate Bitcoins at a feasible rate to make any money (in your lifetime at least). If you have some money readily available for investment, and based on my current experience you can build a GPU mining machine for as low as about $288. However, that would be with very low-level mining machine with only 1 GPU capable of generating at small mhash rate. I’ll explain what mhash means in section 5.3.

HOW MUCH MONEY DO I WANT TO INVEST? This is a tricky question, and all depends on how big of a risk taker you are. I like to put my money to work so I’m a big fan of investing. Anywhere that I can put money, and turn it into more money is usually all I need to hear. But, the most important thing is analyzing your risk and loss. Let’s be honest, Bitcoin as a currency is the first of its kind, so we really can’t be sure how stable it is, or how long it’s going to be around. Maybe one day the price will crash, as we’ve seen the price has fluctuated pretty violently at times. Maybe governments will get involved, shutting it down, making it illegal, etc.. Maybe people will one day just begin to de-value Bitcoin, and no longer accept it as currency. There are various downfalls that can come about, but here is the way I look at my investment losses; If the worst possible thing happens, which is Bitcoin ceasing to exist PERIOD, what am I left with? Essentially, I am left with a lot of valuable hardware, which is in perfectly good condition. Many people would probably pay some good money for these computers on Ebay or other marketplaces. These machines are a gamers dream with their video rendering capabilities. Not to mention that they each can support up to 18 monitors! They would be great for stock brokers and day traders. Bottom line is, I can probably sell this equipment and make back 70%-75% of my initial investment. Therefor I have my conclusion; I am willing to take a risk in a chance of losing 30% of my investment, and to me it is worth the risk. Some of you won’t be okay with that, by that is why it’s called an INVESTMENT: “A thing that is worth buying because it may be profitable or useful in the future.”

HOW MUCH MONEY DID YOU PERSONALLY INVEST? If you want to know how much I spent on each machine, I’ll say it flat out: About $1,600 per machine including shipping. Each machine is currently capable of calculating 1,071 mhash/s. Yes my GPUs are overclocked and we’ll discuss that later in section 9.1. I also post my exact hardware configuration, and the links to where I purchased it in section 4.4. Return on Investment (ROI) 3.1

WHAT IS THE CURRENT VALUE OF BITCOIN? The current monetary value of Bitcoin can be determined by going to http://Bitcoincharts.com/markets/ At the time of my writing this article, the current value is about $14 USD per Bitcoin. Of course this price is subject to change and will fluctuate. I’ve seen Bitcoin as high as $28 USD, and have seen many people sell at that price too. The price of Bitcoin will unquestionably be one of the two primary factors of your ROI. When started building my rigs, the price of Bitcoin was $20 – $24. At that time, I calculated my ROI to take about 2 months. Obviously, that has changed, and I will explain more in section 3.4 below.3.2

HOW MANY BITCOINS CAN I GENERATE PER DAY? This depends on 3 main factors:

a. Are you using a Bitcoin Pool or Solo Mining? (More info in section 12.1)

b. What is the current difficulty rate? (More info in section 3.3)

c. What kind of hardware are you using? (More info in section 4.1) Using this calculator, you can get a pretty good estimate of how many Bitcoins you can generate, and how much money you could make if you sell those Bitcoins for USD.

WHAT IS BITCOIN DIFFICULTY LEVEL Difficulty is a measure of how difficult it is to find a new block compared to the easiest it can ever be. The difficulty changes every 2016 blocks. The following is the formula, which calculates the difficulty: difficulty = maximum_target / current_target (target is a 256 bit number)

What is the maximum difficulty? The maximum difficulty is roughly: maximum_target / 1, which is a ridiculously huge number (about 2^224). The actual maximum difficulty is when current_target=0, but we would not be able to calculate the difficulty if that happened. (fortunately it never will, so we’re ok.)

Can the difficulty go down? Yes it can. See discussion in target.

What is the minimum difficulty? The minimum difficulty, when the target is at the maximum allowed value, is 1. For more information on Difficulty please see: https://en.bitcoin.it/wiki/Difficulty I also suggest reading about Blocks: https://en.bitcoin.it/wiki/Block

HOW WILL THE DIFFICULTY LEVEL AFFECT MY BITCOIN MINING? A simple answer: The higher the difficulty rate is, the harder it is to create Bitcoins. There, that was simple :) If you want more detailed information, see section above. Hardware

WHAT KIND OF HARDWARE DO I NEED? In order to mine for Bitcoins, you generally need the same hardware as a regular computer such as: Motherboard, CPU, Power Supply, Memory (RAM), GPU, Harddrive OR USB Flash drive Additionally you may need some other components such as: Ethernet cable, Keyboard, Mouse, and Monitor. The Keyboard, Mouse, and Monitor components are only required for the initial setup and configuration, and do not need to be connected in order to actually continue mining. Some other components are optional such as a computer case, Hard drive, and CD-Rom drive.

WHAT IS THE BEST HARDWARE TO GET FOR MY BUCK? I won’t spend too much time on this question because there is an extremely helpful list of hardware for example Bitcoin mining rigs, and where to purchase. It is posted below: I also provide a list of the exact hardware that I purchased for my rigs in section 4.4 below. I did a lot of research before buying my hardware, although I did not see the list shown below before making my purchases, so consider yourself lucky! Prices are always changing and hardware always goes down in cost, so I definitely encourage you to do some research on your own too. Here are a few main things to keep in mind:

Motherboard: You want find a motherboard with as many PCIe x16 or PCIe x8 slots as possible. This will determine how many GPUs you will be able to use in your rig.

CPU: Although we are going to be using our GPUs to mine for Bitcoins, you still need a decent CPU in order to keep the machine stable. I would reccomend any of the following types of CPUs in order from worst to best: Dual Core, Quad Core, Corei3, Corei5, Corei7. I listed only intel CPUs since they are most common. Here is a great resource for CPU benchmarks / prices: http://www.cpubenchmark.net/

GPU: This will be your most important investment since it is the main factor in dtermining

RAM: You don’t need much ram at all 1-2 GB should be just fine.


This list of hardware is from: https://en.bitcoin.it/wiki/Mining_rig Typical Dedicated Miner Configurations Using a Tower One ATI 5830, Approximately 245 Mhash/s

Component Description Source Amount
Chassis n/a n/a n/a
Power Supply Rosewill Green Series RG530-S12 530W, 80 PLUS Certified NewEgg $50
Motherboard Foxconn M61PMP-K AMD NewEgg $45
CPU AMD Sempron 140 NewEgg or Amazon $38
Memory 2GB DDR3 NewEgg $17
Graphics card Radeon HD 5830 NewEgg or Amazon($153) $110
Case Fan n/a n/a n/a
Storage Western Digital Caviar 80GB NewEgg $17
Media Drive DVD Rom Drive n/a n/a
Keyboard, Mouse and Display n/a n/a n/a
Total (Approx: $1.1755 /Mhash) $288 + s/h/t

Three ATI 5770s, Approximately 630 Mhash/s

Component Description Source Amount
Power Supply Rosewill Green Series RG530-S12 530W, 80 PLUS Certified NewEgg $50
Motherboard ASRock 890GX EXTREME4 NewEgg $125
CPU AMD Sempron 130 NewEgg $30
Memory 2GB DDR3 NewEgg $17
Graphics card Sapphire Radeon HD5770 1GB DDR5 superbiiz orAmazon $339 ($113 x 3)
Storage Western Digital Caviar 80GB NewEgg $17
Total (Approx: $1.0412 /Mhash) $578 + s/h/t

Two ATI 5850s, Approximately 600 Mhash/s

Component Description Source Amount
Chassis n/a n/a n/a
Power Supply CORSAIR Builder Series CX600 V2 600W , 80 PLUS Certified NewEgg $70
Motherboard MSI 870-G45 AM3 AMD 770 ATX Amazon or NewEgg ($5 more) $70
CPU AMD Sempron 140 NewEgg or Amazon (same price) $39
Memory 2GB DDR3 NewEgg $17
Graphics card Sapphire Radeon HD 5850 XTREME Amazon $322 ($161 x 2)
Case Fan n/a n/a n/a
Storage Western Digital Caviar 80GB NewEgg $17
Media Drive DVD Rom Drive n/a n/a
Keyboard, Mouse and Display n/a n/a n/a
Total (Approx: $0.8917 /Mhash) $535 + s/h/t

Three ATI 5850s, Approximately 900 Mhash/s

Component Description Source Amount
Chassis n/a n/a n/a
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard MSI 890FXA-GD70 Amazon $195
CPU AMD Sempron 140 NewEgg orAmazon $39
Memory 2GB DDR3 NewEgg $17
Graphics card Sapphire Radeon HD 5850 XTREME Amazon $483 ($161 x 3)
Case Fan n/a n/a n/a
Storage Western Digital Caviar 80GB NewEgg $17
Media Drive DVD Rom Drive n/a n/a
Keyboard, Mouse and Display n/a n/a n/a
Total (Approx: $0.9677 /Mhash) $871 + s/h/t

Three ATI 6990s, Approximately 2.1 Ghash/s

Component Description Source Amount
Chassis CoolerMaster HAF X Amazon $179
Power Supply SILVERSTONE ST1500 1500W, 80 PLUS Silver Certified Newegg $365
Motherboard MSI 890FXA-GD70 Amazon $195
CPU AMD Sempron 140 NewEgg orAmazon $39
Memory 2GB DDR3 NewEgg $17
Graphics card 3 * Radeon HD 6990 NewEgg $2220 ($740 × 3)
Storage Western Digital Caviar 80GB NewEgg $17
Keyboard, Mouse and Display n/a
Total (Approx: $1.4438 /Mhash) $3,032 + s/h/t

Typical Dedicated Miner Configurations Using a Rack Mount Budget AMD Sempron / Dual ATI 6990: Approximately 1.4 Ghash/s

Component Description Source Amount
Chassis IPC-4370S 4U P-Link Computer $85 (incl s/h)
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard MSI 870-G45 AM3 AMD 770 ATX Amazon or NewEgg ($5 more) $70
CPU AMD Sempron 140 NewEgg or Amazon $39
Memory 2GB DDR3 NewEgg $17
Graphics card 2 * Radeon HD 6990 NewEgg $1480 ($740 × 2)
Storage Western Digital Caviar 80GB NewEgg $17
Keyboard, Mouse and Display n/a
Total (Approx: $1.3057 /Mhash) $1,828 + s/h/t

Typical Multipurpose Miner Configurations High-end Intel-based miner/gaming rig: single ATI 6990, Approximately 750 Mhash/s

Component Description Source Amount
Chassis CoolerMaster HAF 932 Amazon $140
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard MSI P67A-GD65 Amazon $173
CPU Intel i5-2500k Amazon $220
Memory G.SKILL Value Series 4GB NewEgg $30
Graphics card Radeon HD 6990 NewEgg $734
Heat Sink Fan CoolerMaster Hyper212+ NewEgg $40
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $22
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display LG IPS231P-BN Black 23″ 6ms IPS NewEgg $250
Total $1814 + s/h/t

High-end AMD-based miner/gaming rig: single ATI 6990, Approximately 750 Mhash/s

Component Description Source Amount
Chassis CoolerMaster HAF 932 Amazon $140
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard Biostar TA890FXE NewEgg $140
CPU AMD Phenom II x6 1100T Black Edition Amazon $190
Memory G.SKILL Value Series 4GB NewEgg $30
Graphics card Radeon HD 6990 NewEgg $734
Heat Sink Fan CoolerMaster Hyper212+ NewEgg $40
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $22
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display LG IPS231P-BN Black 23″ 6ms IPS NewEgg $250
Total $1760 + s/h/t

Mid-level AMD-based miner/gaming/workstation rig: single ATI 6870, Approximately 300 Mhash/s

Component Description Source Amount
Chassis CoolerMaster Centurion 5 NewEgg $50
Power Supply PC Power & Cooling Silencer Mk II 950W, 80 PLUS Silver Certified Directron $120
Motherboard ASRock 890GX Pro3 NewEgg $110
CPU (incl. stock heatsink + fan) AMD Phenom II X4 955 Black Edition NewEgg $114
Memory G.SKILL Value Series 4GB NewEgg $30
Graphics card Radeon HD 6870 Amazon $165
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $21
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display HANNspree By Hanns-G HF225DPB 21.5″ NewEgg $120
Total $815 + s/h/t

Mid-level Intel-based miner/gaming/workstation rig: single ATI 6870, Approximately 300 Mhash/s

Component Description Source Amount
Chassis CoolerMaster Centurion 5 NewEgg $50
Power Supply Antec Earthwatts EA-650 GREEN 650W, 80 PLUS BRONZE certified NewEgg $65
Motherboard MSI PH67S-C43 (B3) NewEgg $85
CPU (incl. stock heatsink + fan) Intel Core i3-2100 Amazon $122
Memory G.SKILL Value Series 4GB NewEgg $30
Graphics card Radeon HD 6870 Amazon $165
Storage Seagate 1TB 7200RPM HDD NewEgg $70
Media Drive ASUS DVD-RW NewEgg $21
Keyboard LITE-ON SK-1788/BS PS/2 Keyboard NewEgg $8
Mouse V7 M30P20-7N PS/2 Mouse NewEgg $7
Display HANNspree By Hanns-G HF225DPB 21.5″ NewEgg $120
Total $743 + s/h/t

4.3AM I CAPABLE OF BUILDING THESE MACHINES FROM SCRATCH? The first question I would ask is: Have you ever built your own computer? If the answer is yes, then there is probably no reason why you can’t build a Bitcoin mining machine yourself either. It requires standard desktop hardware, just like you would use to build a personal computer. If you have never built your own computer, I’m not sure whether or not I should encourage you to move forward and try to build one. If you have a friend or colleague with experience who can help you out, I would say don’t hesitate! Even if you are pretty handy with electronics, and know about computers or the components that comprise them, then here are a few guides on how to build your own computer: http://www.build-your-own-computers.com/ http://www.kitchentablecomputers.com/started.php http://www.build-gaming-computers.com/ http://www.pcworld.com/article/203950/how_to_build_your_own_pc_part_1.html http://www.youtube.com/watch?v=QQQ30QoF_-8 There are plenty of resources out there, do some googling: “How to build your own computer”. 4.4WHAT EXACT HARDWARE DID YOU USE FOR YOUR BITCOIN MINERS? Below is the exact hardware that I bought for my rigs. You will notice that the graphics cards that I purchased for my rigs may currently out of stock on Newegg (ASUS Radeon 6950). However, we will discuss various other graphic card choices in the next section. There are even better cards available but all depends on your budget. Also, I am aware that I could have gotten some of these compnents slightly cheaper if I shopped around more. The bottom line is I like Newegg They are prompt, shipping is fast, and always reliable. I’d rather buy all my parts from the same vendor, and 99% of the time it isNewegg.com.

GPU Mining 5.1WHERE CAN I COMPARE GRAPHICS CARDS (GPUS)? The following link, is a VERY important one. It should be your bible in choosing, and comparing available GPUs that are on the market: https://en.bitcoin.it/wiki/Mining_hardware_comparison Luckily, they recently added “20 Popular Mining Cards” to this document, I’ll include it below. This wiki page lists out every GPU, the model, the mhash/s (discussed in section 5.3), the slot type, watts, clock, and other notes related to overclocking and configuration. Mhash is explained in the next section: 5.3

  • Mhash/s: millions hashes per second (raw speed performance ; may not be very energy efficient with some models)
  • Mhash/J: millions hashes per joule (energy efficiency ; 1 joule of energy is spent for 1 watt in 1 second)
  • Watts: (maximum power consumption, i.e. energy per unit of time : 1 W = 1 J/s)
  • Clock: (in MHz) refers to the Shader clock only with nVidia cards (not Core or Memory). With AMD card the shader clock is not separate, but is part of the GPU clock.
  • Stream processors (SP): (Shader Units)

Keep this in mind: Mhash/s: The main goal you want to achieve is lowest cost vs highest mhash rate. The more mhash/s (megahash per second) a GPU can produce the faster is can calculate and process Bitcoin data. Watts: Another thing to note are watts. Your computers power supply must have enough watts in order to power these cards. If you have 3 GPUs that use 200 watts, but only have a 500 watt power supply 1 of two things will happen. It won’t power up properly and some components in the machine will not get enough power. Or YOU CAN BLOW OUT THE POWER SUPPLY. Yes that’s right, it has happened to me. At one point I drew more power than the power supply (PSU) could handle, and my machine shut off, permanently. Well, until I replaced the power supply, which is a pain in the ass considering it is wired up everywhere inside the machine. Slots: Some GPUs have different slot or plug configurations. The most common for high performace GPUs are PCIe x 16 or PCI x 8. Make sure your motherboard has these slots so you will be able to plug your GPUs in. 5.220 POPULAR MINING GPUS

Model Price Availability Avg. Mhash/s Mhash/J Mhash/$
5770 $136 Moderate 212.83 1.45 1.56
5830 $129.99 Moderate 286.45 1.4 1.59
5850 $161 Limited 325.49 1.73 2.02
5870 $350 Limited 393.46 1.9 1.12
5970 $730 V. Limited 655.83 2.01 0.90
6750 $116 Easy 167.59 1.44
6770 $137 Easy 196.67 1.44
6850 $160 Easy 213.7 1.35 1.34
6870 $190 Easy 278.31 1.73 1.46
6950 $250 Easy 360.62 1.8 1.44
6970 $350 Easy 389.55 1.72 1.11
6990 $770 Limited 758.82 1.91 0.99
5830×2 $360 Moderate 525 1.46
5850×4 $644 Limited 1360 1.94 2.11
5870×2 $700 Limited 787.5 0.84 1.13
6770×2 $274 Easy 464 1.69
6950×4 $1,000 Easy 1316 1.51 1.32
6970×2 $700 Easy 769 ~1.6 1.10
6990×2 $1,540 Limited 1568 ~1.7 1.02
6990×3 $2,310 Limited 2094 ~1.8 0.915.3WHAT IS MHASH RATE?

Mhash/s means megahashes per second, or 1,000,000 hashes per second, which is the raw speed performance each GPU is capable of. As mentioned previously, The more mhash/s (megahash per second) a GPU can produce the faster is can calculate and process Bitcoin data. There really is not much more to know :) Also, you might see the term gigahash as well, or ghash/s. This is equal to 1000 mhash/s.

WHAT ARE STREAM PROCESSORS? Stream processing is a computer/hardware programming technique that allows some applications to more easily exploit a limited form of parallel processing. Most new video cards have stream processors. Basically video cards have different shaders that are used as small processors to process parts of the image, a stream processor is a generic shader that can be turned into a specific shader on demand (depending on the need). The stream processor is what does a huge portion of the actual rendering. So basically each stream processor is like a processor for a video card. Doubling the number of stream processors does pretty much double the speed of the video card for rendering stuff Learn more about stream processing here: http://en.wikipedia.org/wiki/Stream_processing

WHY ARE AMD (ATI) GPUS BETTER THAN NVIDIA GPUS FOR BITCOIN MINING? Firstly, AMD designs GPUs with many simple ALUs/shaders (VLIW design) that run at a relatively low frequency clock (typically 1120-3200 ALUs at 625-900 MHz), whereas Nvidia’s microarchitecture consists of fewer more complex ALUs and tries to compensate with a higher shader clock (typically 448-1024 ALUs at 1150-1544 MHz). Because of this VLIW vs. non-VLIW difference, Nvidia uses up more square millimeters of die space per ALU, hence can pack fewer of them per chip, and they hit the frequency wall sooner than AMD which prevents them from increasing the clock high enough to match or surpass AMD’s performance. This translates to a raw ALU performance advantage for AMD:

AMD Radeon HD 6990: 3072 ALUs x 830 MHz = 2550 billion 32-bit instruction per second

Nvidia GTX 590: 1024 ALUs x 1214 MHz = 1243 billion 32-bit instruction per second This approximate 2x-3x performance difference exists across the entire range of AMD and Nvidia GPUs. It is noticeably visible in all ALU-bound GPGPU workloads such as Bitcoin, password bruteforcers, etc. Secondly, another difference favoring Bitcoin mining on AMD GPUs instead of Nvidia’s is that the mining algorithm is based on SHA-256, which makes heavy use of the 32-bit integer right rotate operation. This operation can be implemented as a single hardware instruction on AMD GPUs, but requires three separate hardware instructions to be emulated on Nvidia GPUs (2 shifts + 1 add). This alone gives AMD another 1.7x performance advantage (~1900 instructions instead of ~3250 to execute the SHA-256 compression function). Combined together, these 2 factors make AMD GPUs overall 3x-5x faster when mining Bitcoins. Networking

WHAT KIND OF INTERNET CONNECTION TO I NEED? You don’t need any special or crazy fast internet connection or configuration. Any standard high speed internet connection should be able to handle many Bitcoin miners just fine. I would recommend 5mbps+. Also, I would recommend that all Bitcoin miners are connected through a wired internet connection for stability and reliability. I’ve has some spotty issues using wifi for bitcoin mining, it’s simply not worth the hassle. 6.2

DO I NEED TO CONFIGURE MY FIREWALL TO RUN BITCOIN? Bitcoin will connect to other nodes, usually on tcp port 8333. You will need to allow outgoing TCP connections to port 8333 if you want to allow your Bitcoin client to connect to many nodes. Bitcoin will also try to connect to IRC (tcp port 6667) to meet other nodes to connect to. If you want to restrict your firewall rules to a few ips and/or don’t want to allow IRC connection, you can find stable nodes in the fallback nodes list. If your provider blocks the common IRC ports, note that lfnet also listens on port 7777. Connecting to this alternate port currently requires either recompiling Bitcoin, or changing routing rules. For example, on Linux you can evade a port 6667 block by doing something like this:

echo 173.246.103.92 irc.lfnet.org >> /etc/hosts
iptables -t nat -A OUTPUT -p tcp --dest 173.246.103.92 --dport 6667 -j DNAT --to-destination :7777 -m comment --comment "Bitcoind irc connection"

HOW DOES THE PEER FINDING MECHANISM WORK?

Bitcoin finds peers primarily by connecting to an IRC server (channel #Bitcoin on irc.lfnet.org). If a connection to the IRC server cannot be established (like when connecting through TOR), an in-built node list will be used and the nodes will be queried for more node addresses. Cooling 7.1

HOW AM I GOING TO KEEP THESE RIGS COOL?

This is not to be overlooked, and is a major concern among people who mine for Bitcoins. The first step in keeping your rigs cool is to regulate the temperature of the room that your miners will be housed. I discuss the details of regulating room temperature in the next section . If you already have your room controlled at a reasonable temperature, then here are several other suggestions to keep your rigs running cool.

Computer Casing: Although I’ve seen MANY rigs laying around without a case, I would certainly recommend keeping your hardware protected inside of a PC case. Exposed hardware is never really a safe option, especially if you have kids, pets, or other factors that could come in contact with your hardware. Assuming you are going to case your rig, getting a good computer case is important for keeping the hardware cool. I recommend getting high performance gaming cases / enclosures from brands like Antec, and Thermaltake. As you can see from the hardware above in section  I have chosen the Antec 900 ATX Mid Tower case. This case has multiple fans and is optimized for airflow…

1 x 120mm TriCool rear fan with 3-speed switch control

2 x 120mm TriCool blue LED front fans with 3-speed switch control to cool HDDs

1 x 200mm top fan I liked the fan setup because all the hot air is exhausted from the back, and top of the cases. This gives me a predictable direction of where my hot air will be moving towards. Also, be sure to keep your wiring inside the case clean. Bulky clumps of wires will block airflow!

More / upgraded fans: I have taken an extra step, and installed 3 more high performance fans in my cases. 2 Vantec Tornado Fans which are placed internally right in front of the 2 x 120mm fans displayed on the front of the case. As well, as a 120mm Ultra Kaze fan on the inside of the side panel vent. Let me just tell you, this rigs are LOUD. They sound like mini jet engines. Hopefully you have a basement or somewhere you could keep them where the noise should not be an issue. Here are the specs of the fans:

 Vantec Tornado 92mm Double Ball Bearing High Air Flow Case Fan – 

Model TD9238H RPM: 4800 RPM

Air Flow: 119 CFM

Noise: Level 56.4 dBA

Scythe DFS123812-3000 

“ULTRA KAZE” 120 x 38 mm Case Fan RPM: 3000 RPM

Air Flow: 133.60 CFM

Noise Level: 45.90 dBA As I said before, the main factor in keeping this rigs cool is keeping the room cool. Good airflow, and good temperature should be all you need to keeping things cool. Check out the section below for how to keep the room cool.

HOW AM I GOING TO KEEP THE ROOM COOL? Keeping the room cool is going to have its challenges, especially if you plan on running 2+ mining rigs in there. These machines basically turn into little heaters, which are exhausting hot air 24/7. I would suggest trying to keep the room temperature 75°F and below. 71°F would be ideal, and I would say 82°F being the max.

Air conditioning: Hopefully this is something you have in your home, if not, my empathy goes out to you and your miners! :D Obviously this would be the first step into keeping any room in your home cool. So make sure you keep your rigs in a cool room, basements are ideal.

Air Duct Booster: This is a little trick I’ve learned over the past, but I’ve taken it a step further in my Bitcoin mining scenario. In order to get the most out of the cool air being sent from the air conditioner through the ducts, I have removed the metal casing that cover most vents, and placed a high powered fan a few feet inside the of air duct. Then I have attached an aluminum wired air hose, with an air tight seal using duct tape, and attached another high powered fan on the end of it. At this point, I have a hose which I can direct in any direction which is literally blasting cool air! IMG080 Box Fans / Oscillating Fans: Large oscillating are good to keep near your rigs, they are very good circulating large amounts of airflow around the room, and preventing the room from getting stale. Industrial fan circulating air Room Exhaust Fan: If you plan on keeping your rigs in a closed room, you better be up for the challenge. Even if you have an air conditioning supply to the closed room, it will constantly be battling with the heat from your miners (depending on how many you have). In my case, I am keeping my rigs is in a pretty small room, which is enclosed. After many tests, and attempts to keeping the room cool, I had no choice but to build an exhaust system. Basically, I cut a large circular hole in the wall closest to where the miners would be flushing out hot air. Then I place an industrial exhaust fan which would suck the hot air out of the room. Yes, I am making sound a lot simpler than it actually was. Here is a pic: IMG081 I’m sure there are other tips and tricks, but these are some that I use. If it is winter time and you have a window nearby, it would be okay to keep that cracked to let cool air in, although it is not recommended to keep hardware exposed to natural outdoor weather. In doing so, you can start dealing with other issues such as humidity, which will factor in on hardware performance and shelf life. 7.3HOW DO I MEASURE ROOM TEMPERATURE? Easiest thing to do is to get yourself a Digital Temperature Monitor If you are not onsite and want to check the temperature remotely you can get one of these USB Temperature Sensors. Personally I use the Hid TEMPer V10.6.0: It is a measurement device using a USB port to connect to a computer or other machines. Here is a screenshot:  7.4

HOW HOT WILL MY GPUS GET AND CAN THEY OVERHEAT? At full load, your GPUs will get HOT! :shock: I’ve seen GPUs go up to 92°C+ (That’s 198 °F). Ideal temperature for your cards would be about 73°C or lower. Yes GPUs can overheat! That is why it is so important to keep your room and rigs cool, so your GPUs have optimal temperatures to operate in. Cooler GPUs will output better performance, and that is the goal, isn’t it? A common problem I have had with my GPUs, is that they are SO close together. Cramming 3 GPUs in a mid-tower case was not easy. There needs to be sufficient space between the cards so that the fans which are cooling the heat sinks have enough airflow. I used small pieces of thick rubber tubing to pry apart each card, so that I would have at least half and inch between each GPU.

HOW CAN I CHANGE THE FAN SPEED ON MY GPUSThis depends on your operating system. Whether you are using Windows or Linux, you must have ATI Catalyst software installed. Please see section 11.2 for more info on how to obtain and install it.

 If you are using Windows: Assuming already have the ATI Catalyst Control Center installed, you can look through the OverDrive™ settings, and adjust the fan speed of the cards. If noise is not an issue I reccomend 100% for maximum cooling. 

If you are using linux: you can use the following commands to increase the speed of your fans. In the below example we will be setting the first available GPU in the machine to 100% fan speed:

DISPLAY=:0.0 aticonfig --pplib-cmd "set fanspeed 0 100"

Notice, that the first GPU is identified as: 0.0 If you wanted to run the same for the second and third card you can do so like this:

DISPLAY=:0.1 aticonfig --pplib-cmd "set fanspeed 0 100"
DISPLAY=:0.2 aticonfig --pplib-cmd "set fanspeed 0 100"

HOW DO I MEASURE GPU TEMPERATURES?

In Windows: Measuring your GPU temperature is relatively easy. If you have ATI Catalyst installed (if not see section 11.2), you can check the GPU temperature by opening the ATI Catalyst software, and finding the OverDrive setting (Screenshot above). On that screen you will be able to see the temperature of the GPU usually measured in Celcius. Overclocking your GPU can affect the temperature, and is discussed in section 9. Another way that I like to measure my GPU temperature in Windows 7 is through GPU Observer, which is a desktop gadget that you can download and display right on your desktop. It shows the temps, fan speed, and memory usage – very useful! 

In linux: You can run the following command to get the temperature of all the GPUs in the system:

DISPLAY=:0.0 aticonfig --odgt --adapter=all

It will return results that look like this… (Look at the 3rd GPU Temps, 57.5°C – NOT BAD!! :cool: )  Power

HOW MUCH POWER WILL I NEED? Of course, this question depends on how many machines / GPUs you plan on running. My machines currently have 3 GPUs installed, with a 1200 Watt power supply. Currently each machine at full load utilizes about 6 Amps, about 700 Watts, which is 0.7 KW (Kilowatts). An average size residential circuit breaker is about 20 Amps. If you exceed 20 Amps of power on a 20 Amp circuit breaker, you will cause too much power to be drawn, and the circuit breaker will shut off to prevent damage or other failures. Therefore, it is important that you are aware of how much power is available on the circuit which your miners will be plugged into. In my scenario, I originally only had about 20 Amps, and I needed to power 3 Machines. Although each machine was only using about 6 Amps a total of 18 Amps, the circuit breaker would still shut off periodically. Sometimes the Amp usage could jump for just a second, and it would be enough to trigger the circuit breaker to shut off. Due to this, I had to install additional circuit breakers, and fish some new lines to the room that was powering my Bitcoin Miners. You always want to leave a little overhead, and not max out the lines. Below are some pictures of the process in running new lines, leaving me at a total of about 80 Amps.

WARNING: If you are unsure how to install a new circuit breaker, or run your own electric lines please consult the assistance or services of a professional electrician! If you are capable of handling this yourself, here are some helpful links:

     Burned out wire due to too much power drawing WARNING: Be sure that you evenly supply power to your GPUs! I made the mistake of running too many watts through a single wire supplied from the power supply. I had various other connections, including a molex splitter which was plugged in to other devices such as fans etc and eventually connecting to the GPU(s). Due to the fact that there was so much power draw through one wire, they quickly burned out, and could have caused serious damage or electrical fire. I would stay away from using any splitter connecters or thin wires when powering your GPUs. – I learned the hard way. Thankfully no serious damage occurred, just needed to replace the wires. 8.2HOW MUCH WILL MY POWER BILL GO UP? Your electric bill WILL increase. In order to figure out how much you will be paying additionally for your electric bill each month we need to do some basic math. Here’s what we need:

  • How many watts each machine is using
  • How much your energy provider charges for KWh (Kilowatt per hour)
  • Duration of time that the machines are running.

We’ll use my setup as our scenario:

  • Each machine uses 700 Watts
  • My energy provider charges about $0.10 KWh (10 cents)
  • My machines are running 24/7

Here is our math: 700 Watts × 24 hours × 30 days = 504,000 watt hours Then we do 504,000 ÷ 1000 x $0.10 = $50.4 Since I have 3 machines I would do $50.4 × 3 = $151.2 Total monthly cost: $151.2 8.3HOW DO I MEASURE MY POWER USAGE? Measuring your power utilization is very easy. I purchased this handy gadget called the “Kill A Watt Electricity Load Meter and Monitor.” It costs $30 on newegg, here is a linkhttp://www.newegg.com/Product/Product.aspx?Item=N82E16882715001. You can monitor Volts, Amps, Watts, Hz, and VA. There are various products like this one available, so find one that suites you. That’s all you need to find out how much power resources each machine is using. Be sure to monitor the usage at full load. Overclocking.

WHAT IS OVERCLOCKING? Overclocking is a term used when running a microprocessor faster than the speed for which it has been tested and approved. Overclocking is a popular technique for squeezing out a little more performance from a system. In many cases, you can force a GPU to run faster than it was intended. Overclocking does come with some risks, however, such as over-heating, so you should become familiar with all the pros and cons before you attempt it. Overclocking is also sometimes called speed margining. Usually when overclocking you are adjusting the following settings:

  • Clock Speed
  • Memory usage
  • Power (voltage)
  • Fan Control

SHOULD I USE OVERCLOCKING? I would say it is pretty safe to overclock any GPU at the right settings, you can certainly get more performance from your GPUs if you overclock. My current mhash rate was 300 mhash/s by default. After overclocking my GPUs, I was able to get up to 352 mhash/s per GPU, and they run very stable…Not bad! This process took some trial an error to get the most out of my GPUs without the machine freezing up, but after a few hours of testing, here are my stats:

Default GPU Settings for ASUS ATI Radeon 6950

  • Clock Speed: 810MHz
  • Memory usage: 1250MHz
  • Power (voltage): 110
  • Fan Speed: 50%

Overclock Settings

  • Clock Speed: 900MHz
  • Memory usage: 800MHz
  • Power (voltage): 110
  • Fan Speed: 100%

You will notice, I increased the clock speed, which is the overall performance, but, I decreased the memory usage. The reason for this is that high memory usage does not provide any benefit in Bitcoin mining. By decreasing the amount of memory it will also help with suppressing the heat. Less heat = better. Also, you will notice I turned my fans up to 100%; this is discussed in section 7.5. 9.3

HOW DO I OVERCLOCK MY GPUS? This depends on your operating system. Whether you are using Windows or Linux, you must have ATI Catalyst software installed. Please see section 11.2 for more info.

If you are using Windows: Assuming you already have the ATI Catalyst Control Center installed, you can look through the OverDrive™ settings, and adjust the performance settings. See the screenshot below:  If you are using linux: here is a great guide that explains how to overclock ATI cards linux by Melcar:http://www.overclock.net/linux-unix/517861-how-overclocking-ati-cards-linux.html. The same instructions are provided below: I have adjusted the code with my overclock settings for the ATI Radeon HD 6900 series:


This is a small guide for overclocking your ATI card under Linux. This guide targets Ubuntu, but it should be the same for any distro. Pre-requisites:

  • Working fglrx driver
  • Card supported by Overdrive (last time I checked only r6xx and up were supported, mobile and integrate chips excluded)

If you type the command aticonfig in a terminal, you will get several config. options that you can use with the driver, including Overdrive options; the proper synthax is aticonfig <option>. This is a list of Overdrive related options:

  --od-enable
        Enables Overdrive. 

  --od-disable
        Disables Overdrive.  You need to restart X for clocks to go back to defaults.

  --odgc
        List your card's current core and memory clocks, the current peak clocks, and the range by which you can overclock (Overdrive locks are applicable).

  --odgt
        Gives out a core temperature reading.

  --odsc={NewCoreClock|0,NewMemoryClock|0}
        Specify desired clocks fore core and memory.

  --odcc
        Apply the new clocks specified by the setclocks command

  --odrd
        Restores default clocks.  You need to restart X for changes to take effect.

Steps for overclocking: 1. The first step obviously is to turn on Overdrive:

aticonfig --od-enable

If your card is not supported, you will get a message saying so. 2. Next we get the current clocks and the valid overclocking range for your card:

aticonfig --odgc

Default Adapter - ATI Radeon HD 6900 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    810           1250
             Current Peak :    810           1250
  Configurable Peak Range : [500-950]     [1250-1350]
                 GPU load :    98%

3. Now we can specify valid frequencies for our overclock:

aticonfig --odsc=900,800

Default Adapter - ATI Radeon HD 6900 Series
                  New Core Peak   : 900
                  New Memory Peak : 800

4. Finally we apply the new frequencies:

aticonfig --odcc

5. Check your new overclock:

aticonfig --odgc

Default Adapter - ATI Radeon HD 6900 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    900           800
             Current Peak :    900           800
  Configurable Peak Range : [500-950]     [1250-1350]
                 GPU load :    98%

You can also use Overdrive for Crossfire setups. The process is identical, with the difference that you need to specify the device being overclocked. Example:

aticonfig --list-adapters
#each card will be given a number that you append to the normal Overdrive commands
aticonfig --adapter=0 --odgc
#and so on...

Stress Testing There is also a stress test available for Overdrive. For me this never works and I have yet to get an answer on this from any ATI dev. But you can try it and see if it works for you:

atiode -P 60 -H localhost:0; echo $?
#runs a stress test for 60 seconds; you can specify whatever time in seconds you want

After the test finishes it will spit out a number. Each number corresponds to a certain status:

0: Test successfully completed.
1: Invalid command-line parameters.
2: Test failed because of rendering errors.
3: Target adapter not found.
4: Test aborted due to unknown reason

Another way of stress testing is to run furmark. It works perfectly under WINE (just make sure you have Compiz off).

Other Tools: If you don’t like the command line, there are also a pair of third party tools that you can use. Same pre-requisites still apply, since this are just frontends for Overdrive:

ATI Overclocking Utility 32bit 64bit   It’s pretty self explanatory. The latest version also has support for Crossfired cards. AMDOverdriveCtrl    Managing

USING A NODE PC TO OVERSEE YOUR BITCOIN MINERS Currently, I have a dedicated windows machine onsite that I can connect to via, VNCRDP, or Logmein. This machine is actually my primary node (connection point) for overseeing my Bitcoin mining rigs. It also is capable of monitoring the temperature in the room.

From this machine I can:

  • Bootup, shutdown, restart, and check the status of all my Bitcoin miners
  • Stop/Start mining software for all or individual GPUs
  • See what speed and mhash/s rate they are running
  • Monitor GPU temperatures
  • Monitor clocks, memory, and voltage
  • Adjust settings such as overclock, fan speeds, and various other scripts that power my Bitcoin miners.

All you need as far as software is Putty to connect to your miners via SSH, and a few bat scripts. I think it is very important to have a central node where you can control and configure all these things, it makes it a lot easier to manage. 10.2

HOW DO I MANAGE MY BITCOIN RIGS? This is pretty broad question, but I’ll try to go over the basics of what I do to manage my Bitcoin mining rigs. You want to check on your Bitcoin miners at least every few days to make sure everything is running smoothly. If you keep them close by (in your home), then it will probably be easier to monitor and manage them. My Bitcoin miners are not kept in my home, so I do my best to stop by the location at least once a week.

Physical check:

  • Ensure all machines are running
  • Ensure all fans are running
  • Check room temperature
  • Check GPU temperatures

Software check:

  • Check Bitcoin proxy (discussed in section 13.1)
  • Check Bitcoin pool accounts (discussed in section 12.1)
  • Check Bitcoin markets

CAN I MANAGE MY BITCOIN MINERS REMOTELY? The simple answer is: Yes.

If you are using Windows: You can use the following protocols to login to your windows machines remotely to manage your Bitcoin miners: VNCRDP, or Logmein.

If you are using Linux: You can use SSH (Command Terminal), or if you want a visual remote connection, take a look at this article: 7 of the best Linux remote desktop clients Software 11.1WHAT SOFTWARE CAN I USE TO RUN TO MINE FOR BITCOINS? Here are my current choices for Windows and Linux mining:

For Windows: I like to use GUIMiner. Screenshot below. 

For Linux: I like to use poclbm. Sorry, it’s command based, so no screenshot. Below is a list of all the popular miners currently out there.

WHAT IS ATI CATALYST CONTROL CENTER, AND WHY DO I NEED IT? The ATI Catalyst Control Center is a 3D acceleration control application that enables you to control the functionality of your graphics card. ATI Catalyst Control Center can be used to fine-tune your graphic settings, enable or disable connected display devices, and change the orientation of your desktop, etc. Many features present you with a preview of your changes before they are applied. The ATI Catalyst Control Center generally comes with graphics driver for ATI graphics card and south bridge driver for ATI chipset (if you have an ATI chipset on your motherboard). The main advantages of ATI drivers and Tools are their universal compatibility with any ATI graphics card or motherboard. So, the single software you download for your use can be is only necessary to run any other ATI graphics card (inbuilt or external, PCI or AGP, whatever).

Downloading ATI Catalyst software for your operating system:

If you are using Windows: The appropriate ATI Catalyst Control Center version usually comes with your graphics card, so you may want to check with your vender for a specific version. OR You can also download this online here: http://sites.amd.com/us/game/downloads/Pages/downloads.aspx.

If you are using Linux: The ATI Catalyst Display Driver can be found here:http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx. You can use the following guide on to install it on Ubuntu 10.10: http://forum.bitcoin.org/?topic=3356.msg47489#msg47489, unfortunately this guide is not verified to work on later versions of Ubuntu or Debian, so you will need to Google around for a guide to help you with that. You can also use your package manager to search and install the latest software.

WHAT OPERATING SYSTEMS CAN I MINE FOR BITCOINS? You can use both Windows and Linux. Personally, I prefer Linux. I highly recommend using LinuxCoin. It is a small Debian Wheezy based OS created just for the bitcoin community. Linuxcoin has been designed with the average user in mind and everything is super simple to start using / mining bitcoins. Everything is pre-installed and is ready to go. It saves a lot of work and headache, this is what I use. Best of all, it can be run directly off a USB flash drive! Which answers our next question… Get more info here: http://forum.bitcoin.org/?topic=7374.0 Or you can visit the official site here:http://www.linuxcoin.co.uk/

CAN I RUN A BITCOIN MINER FROM A USB FLASH DRIVE? YES! Use LinuxCoin, please read the section above!

AUTOMATION AND BATCH SCRIPTS My friend Brandon and I put together a very nice automated script that sets up our entire bitcoin mining environment. It creates various files and utilities that we’ll need to run, overclock, and monitor our Bitcoin miners.

Please note: This code has only been used / tested on LinuxCoin!

This script does the following (Scroll down to see the “Setup” script):

  • Disables Screen Saver
  • Enables AMD Registration
  • Creates gpuminer.sh config files for each indivdual GPU worker
  • Creates startgpu.sh files for each GPU and use settings from the gpuminer.sh
  • Creates mine.sh files which use screen to execute the startgpu.sh
  • Creates maxfans.sh, which boosts all the GPU fans to 100%
  • Creates startallgpus.sh, which can be used to start all GPUs
  • Creates gettemps.sh, which can be used to retrieve the temperature from all GPUs
  • Creates overdrive_profile.ovr, which sets up the overclock settings
  • Creates setclocks.sh, which actually applies the overclock settings
  • After it creates all the files, it sets the proper permissions on files
  • Lastly, it installs screen, and then runs setclocks.sh

You WILL need to customize this script for your needs! This code has been setup to use 3 GPUs. You will notice reference to GPU1, GPU2, and GPU3. This is what you’ll need to customize:

  • GPU Count: If you have more or less GPUs, you will need to adjust this script.
  • Username/Password/Pool/Port: You will need to change the username, password, mining pool, and possible the port (-p).
  • Clock Settings: These clock settings are optimized for the ATI Radeon HD 6950 GPU. If you do not have this card, you will probably need to adjust your clock settings to the appropriate frequencies.

I use a Windows machine to execute / monitor all my bitcoin miners. I use Putty to configure SSH profiles for each bitcoin miner GPU, and then I use a .bat file to launch which bitcoin miners I want. The .bat file will run putty, automatically login to the bitcoin mining rig, and launch our command to start running the miner. First I setup a Putty session for each GPU per machine. For example, M1_GPU1, M1_GPU2, M1_GPU3. Each one of them point to my first Bitcoin mining rig identified as M1. The IP address of M1 is: 192.168.1.4 Next, I go to the “SSH” menu item on the left, and I tell putty a command to execute upon login. You will see I input: /home/user/mine1.sh. I will set this accordingly to each GPU, so the second one would simply be: /home/user/mine2.sh, and the third woudl be: /home/user/mine3.sh. This command will actually execute out bitcoin miners to run. Then, I go to the “Behavior” menu item on the left, and I give each one their appropriate name. This way, when each GPU terminal windows pops up, it has the appropriate title in the title bar so I can identify it. Lastly, I go to the “Window” menu item on the left, and I specify the amount of columns and rows, so when the GPU terminal window opens, it will be in nice little square. When we are all done with Putty, I create a .bat file with the following code. This code actually runs putty.exe, then it identifies the profiles we just created in putty, and automatically logs in to the SSH session using the username “user” and the password “live” (default login with LinuxCoin). However, remember the /home/user/mine1.sh, we put into the “SSH” menu? When this putty runs, and uses the profile we created, it will automatically run that command, upon login. That THAT is what executes each GPU miner!

Code for our .bat file:

start /SEPARATE putty.exe -load "M1_GPU1" -l user -pw "live"
start /SEPARATE putty.exe -load "M1_GPU2" -l user -pw "live"
start /SEPARATE putty.exe -load "M1_GPU3" -l user -pw "live"

Create setup script file on linux To use this code, you will need to create a file on Linux and copy and paste the contents inside. Save it as a .sh file, for example setup.sh. Then you can execute this file by running:

sudo sh setup.sh

Here is the setup script

#!/bin/bash

# Disable Screen Saver ---------------------------------------
setterm -blank 0
DISPLAY=:0.0 xset -dpms
DISPLAY=:0.0 xset s 0
sudo killall xscreensaver

# Enable AMD Registration ---------------------------------------
cd /opt/AMD-APP-SDK-v2.4-lnx64
sudo tar xvfz icd-registration.tgz -C /

cd /home/user/
sudo chmod -R 777 /opt
mkdir /home/user/miners/

# Setup Mining Configs---------------------------------------

cat > /home/user/miners/gpu1miner.sh << EOF
#!/bin/bash
export DISPLAY=:0.0
cd /opt/miners/poclbm/;DISPLAY=:0.0 python poclbm.py --user=GPU1 --pass=password --device=0 -o yourbitcoinpool.com -a 5 -p 80 -v -w 128 -f 25
EOF

cat > /home/user/miners/gpu2miner.sh << EOF
#!/bin/bash
export DISPLAY=:0.1
cd /opt/miners/poclbm/;DISPLAY=:0.1 python poclbm.py --user=GPU2 --pass=password --device=1 -o yourbitcoinpool.com -a 5 -p 80 -v -w 128 -f 25
EOF

cat > /home/user/miners/gpu3miner.sh << EOF
#!/bin/bash
export DISPLAY=:0.2
cd /opt/miners/poclbm/;DISPLAY=:0.2 python poclbm.py --user=GPU3 --pass=password --device=2 -o yourbitcoinpool.com -a 5 -p 80 -v -w 128 -f 25
EOF

# Run Individual GPU's---------------------------------------

cat > /home/user/startgpu1.sh << EOF
#!/bin/bash
export DISPLAY=:0.0
sh /home/user/miners/gpu1miner.sh
EOF

cat > /home/user/startgpu2.sh << EOF
#!/bin/bash
export DISPLAY=:0.1
sh /home/user/miners/gpu2miner.sh
EOF

cat > /home/user/startgpu3.sh << EOF
#!/bin/bash
export DISPLAY=:0.2
sh /home/user/miners/gpu3miner.sh
EOF

# Define Mine Files---------------------------------------

cat > /home/user/mine1.sh << EOF
#!/bin/bash
screen -s GPU1 -t M1_GPU1 /home/user/startgpu1.sh
EOF

cat > /home/user/mine2.sh << EOF
#!/bin/bash
screen -s GPU2 -t M1_GPU2 /home/user/startgpu2.sh
EOF

cat > /home/user/mine3.sh << EOF
#!/bin/bash
screen -s GPU3 -t M1_GPU3 /home/user/startgpu3.sh
EOF

# Set Fans to 100% ---------------------------------------

cat > /home/user/maxfans.sh << EOF
#!/bin/bash
DISPLAY=:0.0 aticonfig --pplib-cmd "set fanspeed 0 100"
DISPLAY=:0.1 aticonfig --pplib-cmd "set fanspeed 0 100"
DISPLAY=:0.2 aticonfig --pplib-cmd "set fanspeed 0 100"
EOF

# Start all GPUs ---------------------------------------
cat > /home/user/startallgpus.sh << EOF
screen -dmS GPU1 /home/user/startgpu1.sh &
screen -dmS GPU2 /home/user/startgpu2.sh &
screen -dmS GPU3 /home/user/startgpu3.sh &
EOF

# Get Temperature ---------------------------------------

cat > /home/user/gettemps.sh << EOF
echo "GPU1";
DISPLAY=:0.0 aticonfig --pplib-cmd "get temperature 0"
echo "GPU2";
DISPLAY=:0.1 aticonfig --pplib-cmd "get temperature 0"
echo "GPU3";
DISPLAY=:0.2 aticonfig --pplib-cmd "get temperature 0"
EOF

# Set GPU Clocks (Mhz,Memory,Voltage)---------------------------------------

cat > /home/user/overdrive_profile.ovr << EOF
<?xml version="1.0" encoding="utf-8"?>
<OVERDRIVE_PROFILE>
  <PERFORMANCE_LEVEL level="2" gpu="88000" mem="80000" voltage="1100"/>
  <PERFORMANCE_LEVEL level="1" gpu="50000" mem="68000" voltage="1100"/>
  <PERFORMANCE_LEVEL level="0" gpu="25000" mem="15000" voltage="900"/>
  <FAN_SETTING percentage="100"/>
  <FAN_CTRL enabled="no"/>
  <FAN_CTRL_CURVE type="0"/>
  <FAN_CTRL_POINT nr="0" temperature="2000" percentage="0"/>
  <FAN_CTRL_POINT nr="1" temperature="4000" percentage="2500"/>
  <FAN_CTRL_POINT nr="2" temperature="6000" percentage="5000"/>
  <FAN_CTRL_POINT nr="3" temperature="8000" percentage="7500"/>
  <FAN_CTRL_POINT nr="4" temperature="10000" percentage="10000"/>
  <MONITOR_SAMPLE_TIME interval="10"/>
  <COLOR_PROFILE enabled="no" longitude="-13.000000" latitude="52.000000" color_temp_day="0" color_temp_night="0" transition="30"/>
</OVERDRIVE_PROFILE>
EOFcat > /home/user/setclocks.sh << EOF
DISPLAY=:0.0 AMDOverdriveCtrl -b -a -i 0 overdrive_profile.ovr
DISPLAY=:0.1 AMDOverdriveCtrl -b -a -i 6 overdrive_profile.ovr
DISPLAY=:0.2 AMDOverdriveCtrl -b -a -i 12 overdrive_profile.ovr
EOF# Set File Permissions ---------------------------------------
chmod +x /home/user/setclocks.sh
chmod +x /home/user/gettemps.sh
chmod +x /home/user/startallgpus.sh
chmod +x /home/user/maxfans.sh
chmod +x /home/user/miners/gpu1miner.sh
chmod +x /home/user/miners/gpu2miner.sh
chmod +x /home/user/miners/gpu3miner.sh
chmod +x /home/user/startgpu1.sh
chmod +x /home/user/startgpu2.sh
chmod +x /home/user/startgpu3.sh
chmod +x /home/user/mine1.sh
chmod +x /home/user/mine2.sh
chmod +x /home/user/mine3.sh# Install Screen ---------------------------------------
sudo apt-get update;sudo apt-get install screen# Run Set Clocks ---------------------------------------
sh /home/user/setclocks.sh

Bitcoin Mining Pools 

WHAT ARE BITCOIN MINING POOLS (POOL MINING)? Pooled mining is an approach where multiple generating clients contribute to the generation of a block, and then split the block reward according the contributed processing power. Pooled mining effectively reduces the granularity of the block generation reward, spreading it out more smoothly over time. Pooled mining “pools” all of the resources of the clients in that pool to generate the solution to a given block. When the pool solves a block, the 50 BTC generated by that block’s solution is split and distributed between the pools participants. Solo mining is when a miner performs the mining operations alone without joining a pool. All mined blocks are generated to the miner’s credit.

Pros/Cons

Pool Mining Pros
  • Pooled mining generates a steadier income.
  • Pooled mining can generate a 1-2% higher income (before fees, if any) due to long polling provided by the pools.
Pool Mining Cons
  • Pool mining can suffer interruptions from outages at the pool provider.
    Pools are subject to DOS attacks and have other downtimes, too. Backup pools and solo mining can be configured for these cases.
  • Pooled mining tends to generate a smaller income due to fees being charged and transaction fees not being cashed out.
    There are zero fee pools. Until now, transaction fees are not cashed out by any pool.
  • Pools might be part of attack scenarios.
Solo Mining Pros
  • Solo mining is less prone to outages resulting in higher uptime.
  • Solo mining doesn’t incur any fees. For each discovered block, 50 BTC and the transaction fees are paid to the miner.
Solo Mining Cons
  • Solo mining tends to generate more erratic income.
  • Solo mining wastes time due to only supporting getwork pull.

See Also

WHAT ARE THE BENEFITS OF USING A BITCOIN MINING POOL? With increasing generation difficulty, mining with lower-performance devices can take a very long time before block generation, on average. For example, with a mining speed of 1000 Khps, at a difficulty of 14484 (which was in effect at the end of December, 2010), the average time to generate a block is almost 2 years. To provide a more smooth incentive to lower-performance miners, several pooled miners, using different approaches, have been created. With a mining pool, a lot of different people contribute to generating a block, and the reward is then split among them according to their processing contribution. This way, instead of waiting for years to generate 50btc in a block, a smaller miner may get a fraction of a bitcoin on a more regular basis. A share is awarded by the mining pool to the clients who present a valid proof of work of the same type as the proof of work that is used for creating blocks, but of lesser complexity, so that it requires less time on average to generate. Get all the details here: https://en.bitcoin.it/wiki/Why_pooled_mining

DIFFERENT TYPES AND REWARDS OF MINING POOLS Reward types and explanation: PPS – Pay Per Share. Each submitted share is worth certain amount of BTC. Since finding a block requires shares on average, a PPS method with 0% fee would be 50 BTC divided by . It is risky for pool operators, hence the fee is highest.

SMPPS – Shared Maximum Pay Per Share. Like Pay Per Share, but never pays more than the pool earns. [1]

ESMPPS – Equalized Shared Maximum Pay Per Share. Like SMPPS, but equalizes payments fairly among all those who are owed. [2]

Prop. – Proportional. When block is found, the reward is distributed among all workers proportionally to how much shares each of them has found.

PPLNS – Pay Per Last N Shares. Similar to proportional, but instead of looking at the number of shares in the round, instead looks at the last N shares, regardless of round boundaries.

Score – Score based system: a proportional reward, but weighed by time submitted. Each submitted share is worth more in the function of time t since start of current round. For each share score is updated by: score += exp(t/C). This makes later shares worth much more than earlier shares, thus the miner’s score quickly diminishes when they stop mining on the pool. Rewards are calculated proportionally to scores (and not to shares). (at slush’s pool C=300 seconds, and every hour scores are normalized) See details here: https://en.bitcoin.it/wiki/Comparison_of_mining_pools 12.4COMPARISON OF MINING POOLS? Personally, I use Bitcoin Pooled Mining (Slush), and Bitcoins.lc. See the rest below and check out this link for details: https://en.bitcoin.it/wiki/Comparison_of_mining_pools (Sorry, I know this table goes off the page! :( )

Name Location GHash/sec Reward Type Transfees Fee PPS Fee Prop/Score Audits Protocol Launched Forum Link
DeepBit Germany 4180 PPS / Prop. kept by pool 10% 3% ? RPC (+LP) 2011-02-26 Link Link
BTC Guild USA, EU 2800 Prop. kept by pool 0% ? RPC (+LP) 2011-05-09 Link Link
Bitcoin Pooled Mining (Slush) London 1491 Score kept by pool 2% ? RPC 2010-11-27 Link Link
Bitcoins.lc EU 624 Prop. kept by pool 0% ? RPC (+LP) 2011-05-27 Link Link
Eligius Germany 500 SMPPS kept by pool 0.000001% Yes RPC (+LP) 2011-04-27 Link Link
BTCMine UK 480 Score kept by pool 2% ? RPC (+LP) 2011-03-11 Link Link
ArsBitcoin USA 300 SMPPS kept by pool 0% ? RPC (+LP) 2011-06-15 Link Link
Bitcoin Mining Pool USA 272 Prop. kept by pool 0% ? RPC (+LP) Unknown Link Link
Mining Team Reddit (MtRed) USA, EU 212 Prop kept by pool 0% ? RPC (+LP) 2011-05-25 1 2 Link
Mineco.in UK 170 PPLNS Shared 0% ? RPC (+LP) 2011-06-15 Link Link
PolMine Poland 150 Prop. kept by pool 0% ? RPC (+LP) 2011-06-13 Link Link
Bitp.it USA 100 ESMPPS kept by pool 0% ? RPC (+LP) 2011-06-08 Link Link
x8s Germany 95 Prop kept by pool 1% ? RPC (+LP) 2011-06-08 Link Link
BitClockers USA, EU 80 Prop. kept by pool 2% ? RPC (+LP) 2011-05-27 Link Link
Eclipse Mining Consortium USA / Europe / AU / Asia 50 Prop / Score kept by pool 0% ? RPC (+LP) 2011-06-14 Link Link
NoFeeMining USA 48 Prop Shared 0% ? RPC (+LP) 2011-06-17 Link Link
PoolMunity France 45 Score kept by pool 1.5% ? RPC (+LP) 2011-07-24 Link Link
Triplemining Europe 45 Prop kept by pool 1% Yes RPC (+LP) 2011-06-28 Link Link
Ozco.in AUS 41 Prop kept by pool 1% ? RPC (+LP) 2011-06-08 Link Link
rfcpool UK 29 Prop & PPS kept by pool 7% 0% ? RPC (+LP) 2011-07-05 Link Link
Btcworld.de Germany 28 Prop kept by pool ? ? RPC (+LP) 2011-06-18 Link
btcmp.com Germany 27 Prop kept by pool 0% ? RPC (+LP) 2011-06-28 Link
Continuum Canada 16 Score kept by pool 0% ? RPC (+LP) 2011-05-17 Link Link
Swepool Sweden 13 Prop kept by pool 0% ? RPC (+LP) 2011-05-14 Link Link
CHWpool Chile 10 Prop kept by pool 1% ? RPC (+LP) 2011-06-30 Link
BitMinter USA 10 Prop kept by pool 0% Yes RPC (+LP) 2011-06-18 Link Link
Betcoin.co Pool USA 10 PPLNS kept by pool 0% ? RPC (+LP) 2011-07-07 Link Link
Bitcoinitalia Italy 4.5 Prop. kept by pool 0% ? RPC (+LP) 2011-07-12 Link Link
BTCSERV.net Germany 3 Prop kept by pool 0% ? RPC (+LP) 2011-07-09 Link Link
bestbitcoinminingpool Australia 3 Prop. kept by pool 0% ? RPC (+LP) 2011-07-01 [4] Link
UnitedMiners US 3 Prop kept by pool 3% No RPC (+LP) 2011-06-28 Link Link
21bitcoin CN, HK 2 Prop. kept by pool 0% ? RPC (+LP) 2011-06-20 [3] Link
P2Pool n/a (P2P) 2 Prop ? 0.5% ? RPC (+LP) 2011-06-17 Link Link
Coinotron Poland 2 Score kept by pool 0% ? RPC (+LP) 2011-07-06 Link Link
Simplecoin Unknown 1.4 Prop kept by pool 0% ? RPC (+LP) 2011-06-02 Link Link
BitLotto Pool Los Angeles 1 Prop kept by pool ? RPC (+LP) 2011-06-08 Link Link
ZA Bitcoin South Africa 0.4 Score kept by pool 0% ? RPC (+LP) 2011-06-14 Link Link

Bitcoin Proxy

WHAT IS A BITCOIN MINING PROXY? A bitcoin mining proxy is a a multi-pool, multi-worker proxy for Bitcoin miners, supporting long polling and pool failover. This software allows multiple miners to be run against multiple pools with fail-over to other pools if something happens to a miner’s preferred pool. It requires a web server supporting PHP, and a MySQL database. Here is a link to what seems to be the only good available Bitcoin Mining Proxy:https://github.com/cdhowie/Bitcoin-mining-proxy

WHAT ARE THE BENEFITS OF USING A BITCOIN MINING PROXY?

Failover: If one pool fails, it can automatically switch to another pool.

Centralization: Keeps all your bitcoin miner workers and pools centralized.

One time login setup: You only need to setup your worker logins one time.

Pool toggling: You can switch, enable, or disable a pool at any given time.

Monitoring: Easily monitor live stats, and mhash rates of your miners. Source: Eric Zhivalyuk ————————————————————————————————————————————————————————————————————————————————————————————————————————————–

ADDITIONAL MINING SOFTWARE:

Mining apps

Source: Bitcoinx ______________________________________________________________________________________________________________________________________________________________________________________________________

Additional Mining Hardware Information:

Mining hardware comparison Below are some statistics about the mining performance of various hardware used in a mining rig. The table shows (mostly) stock clock numbers. 10-20% performance improvement can be achieved with CPU overclocking tools. Notes:
  • kHash/s = total hashing speed of all cores added together
Table of Contents

Intel CPUs

Model kHash/s Watts Clock (GHz) Cores Miner Command line arguments Operating system Notes
Intel Pentium M 740 0.8 ? 1.73 1 pooler’s cpuminer 2.2.2 Windows XP Pro. 32-bit
Intel Pentium M 1.23 ? 1.60 1 pooler’s cpuminer 2.2 Gentoo Linux, 32-bit
Intel Atom N270 2.57 5.5 (TDP) 1.66 1 pooler’s cpuminer 2.2.2 Ubuntu Linux, 32-bit
Intel Atom N450 2.61 5.5 (TDP) 1.66 1 pooler’s cpuminer 2.2.2 Ubuntu Linux, 64-bit
Intel Atom N2800 5.81 6.5 (TDP) 1.87 2 (4 threads) pooler’s cpuminer 2.2.2 Xubuntu 12.04, 64bit with no desktop just command line
Intel Pentium Dual T3400 8.5 35 (TDP) 2.16 2 pooler’s cpuminer 2.2.2 Ubuntu 12.04, 64-bit
Intel Celeron 440 4 35 (TDP) 2.0 1 pooler’s cpuminer 2.2.2 Ubuntu 12.04, 64-bit
Intel Core 2 Duo T5500 7.28 ? 1.66 2 pooler’s cpuminer 2.2.2 Gentoo Linux, 64-bit
Intel Core 2 Duo T7250 5 ? 2.00 2 pooler’s cpuminer v? Ubuntu 8 running under wine
Intel Core 2 Duo T7500 6.5 ? 2.20 2 pooler’s cpuminer 2.2 Windows Vista 32-bit
Intel Core 2 Duo T9500 17.76 35 (TDP) 2.60 2 pooler’s cpuminer 2.1.2 -t 2 Windows 7 64-bit
Intel Core 2 Duo E2200 9.20 ? 2.20 2 pooler’s cpuminer v2.2.2 -t 2 Windows XP Pro. 32-bit Overclocked to 2.9 ghz
Intel Core 2 Duo E6600 10.45 ? 2.40 2 pooler’s cpuminer v2.2.0 Windows 7 x64
Intel Core 2 Duo E7300 7 92 2.70 2 pooler’s cpuminer v? Windows XP Pro. 32-bit idle priority
Intel Core 2 Duo E7500 13.1 ? 2.93 2 pooler’s cpuminer v2.2.3 Windows 7 x64
Intel Core 2 Quad Q6600 9.68 105 (TDP) 2.40 4 pooler’s cpuminer v1.0.2 -t 4 Debian sid x64 ~398% usage
Intel Core 2 Quad Q8400 21.6 ? 2.66 4 pooler’s cpuminer v? Windows 7 x64
Intel Core 2 Quad Q9550 27.5 ? 2.83 4 pooler’s cpuminer v2.2.2 Windows 7 x64
Intel Core 2 Quad Q9550 32.2 ? 3.40(OC) 4 pooler’s cpuminer v2.2.3 Windows 7 x64
Intel Core 2 Extreme QX9775 29.2 350 3.20 4 pooler’s cpuminer v2.2.3 Windows 7 x64 power draw is for dual cpu
Intel Xeon E5405 18.8 2.00 4 pooler’s cpuminer 2.2.3 Ubuntu x64
Intel Xeon X5450 22 120 (TDP) 3.00 4 pooler’s cpuminer v? Ubuntu Server 10.04.3 LTS x86_64 nice 19
2x Intel Xeon E5504 42 2.00 2×4 pooler’s cpuminer 2.2.2 -t16 Gentoo x64
Intel Xeon E5620 26.4 2.40 4 (8 HT) pooler’s cpuminer 2.2.3 Ubuntu x64
Intel Xeon E5-1650 64.61 130 (TDP) 3.20 6 (12 HT) pooler’s cpuminer 2.2.3 Ubuntu x64
Intel Xeon E5-2630L 41 60 (TDP) 2.0 6 (12 HT) pooler’s cpuminer 2.2.3 -t 6 Debian x64 Tested at a dualprocessor machine for 82 kh/s with -t 12
Intel Xeon L3426 19.36 45 (TDP) 1.87 4 (8 HT) pooler’s cpuminer 2.2.3 Ubuntu x64
Intel Xeon E31220 40.50 80 (TDP) 3.1 4 (1 HT) pooler’s cpuminer 2.2.3 Ubuntu x64
Intel Core i3 540 15.4 ? 3.06 2 (4 HT) pooler’s cpuminer 2.2.2 -t4 Windows 7 x64
Intel Core i3 2100 19 29 3.10 2 (4 HT) pooler’s cpuminer 2.2.2 -t3 Windows 7 x64
Intel Core i3 2120 21.5 65 (TDP) 3.30 2 (4 HT) pooler’s cpuminer 2.2.3 -t4 Windows 7 x64 ~61C with stock cooler
Intel Core i3 2130 23 65 (TDP) 3.40 2 (4 HT) pooler’s cpuminer 2.2.3 -t4 Windows Server 2008 x64
Intel Core i5 650 17.18 ? 3.20 2 (4 HT) pooler’s cpuminer v2.2.3 Fedora 18 x64
Intel Core i5 750 30 – 31 96 (TDP) 3.30 (OC) 4 pooler’s cpuminer v2.2.3 Windows 8 x64 Overclocked. Normal CPU 2.67GHz.
Intel Core i5 2467M 12 ? 1.6 4 ScryptMiner GUI x64 (4 threads) Windows 7 Home Premium
Intel Core i5 2400S 32.8 ? 2.50 4 pooler’s cpuminer 2.2.3 Linux Mint 13
Intel Core i5 2500K 31 103 5.00 4 pooler’s cpuminer v? Windows 7 x64 low priority
Intel Core i5 2500K 48 90 4.9 4 pooler’s cpuminer 2.2.3 Windows 8 x64 low priority
Intel Core i5 2500K 53 ? 4.2 4 pooler’s cpuminer 2.2.3 Linux Arch x64 Multiplier: 42. VCore: 1.25V
Intel Core i5 3570K 55 83 4.5 4 pooler’s cpuminer 2.2.2 Windows 7 x64 low priority
Intel Core i5 2500T 28 45 (TDP) 2.40 4 pooler’s cpuminer v? Ubuntu 11.10
Intel Core i5 3210M 14.21 ? 2.50 2 (4 Threads) pooler’s cpuminer v2.2.3 Lubuntu 13.04
Intel Core i5 3470 43 77 (TDP) 3.2 4 pooler’s cpuminer v2.2.3 Ubuntu 12.10
Intel Core i7 740QM 16 ? 1.73 4 (8 HT) pooler’s cpuminer 2.2 Windows 7 x64
Intel Core i7 860 25 153 2.80 4 (8 HT) pooler’s cpuminer v? Gentoo Linux, 64-bit CFLAGS=”-O3 -msse2″
Intel Core i7 870 35.4 ? 3.4 4 (8 HT) pooler’s cpuminer 2.2.2 -t8 Windows 7 x64
Intel Core i7 920 37 ? 2.67 4 (8 HT) pooler’s cpuminer 2.2 Windows 7 x64
Intel Core i7 920 41 ? 4.00 4 (8 HT) pooler’s cpuminer 2.2.1 Windows 7 x64
Intel Core i7 2600 47.15 ? 3.40 4 (8 HT) pooler’s cpuminer 2.2 Ubuntu 11.10
Intel Core i7 2600K 49 ? 4.60 4 (8 HT) pooler’s cpuminer v? Windows 7 x64 normal priority
Intel Core i7 2700K 50 80 3.9 4 (8 HT) ScryptMiner GUI x64 Windows 7 x64
Intel Core i7 3630QM 39 49 (W, sensor) 3.293 4 (8 HT) pooler’s cpuminer v2.2.3 Windows 7 x64
Intel Core i7 3630QM 41 ? ? 4 (8 HT) pooler’s cpuminer v2.2.3 Windows 8 x64
Intel Core i7 3770 60 ? 4.38 4 (8 HT) pooler’s cpuminer v2.2.2 Windows 7 x64 bclck 107 mhz, Multiplier 41
Intel HD4000 Graphics (i7-3770) 17-18 ? 1600 (OC) 1 guiminer-scrypt 0.03 Windows 7, x64 hashing while using pc with monitor on HD4000. reaper miner. thread conc: 4000; worksize: 64; vector&threads: 1; intensity: 10
Intel Core i7 3930K 98 200 4.50 6 (12 HT) pooler’s cpuminer v2.2.2 -t 11 Windows 7 x64 Last thread used for GPU Mining
Intel Core i7 3960X 101 ? 4.29 6 (12 HT) pooler’s cpuminer v2.2.2 Windows 7 x64
Intel Core i7 2630QM 16 50 2.00 4 (8 HT) pooler’s cpuminer v? -t 6 Windows 7 x64
Intel Core i7 2760QM 38 ? 2.40 4 (8 HT) pooler’s cpuminer v? Ubuntu 11.10, 64-bit CFLAGS=”-m64 -O3″
Intel Core i7 3720QM 37 45 (TDP) 2.60 4 (8 HT) pooler’s cpuminer 2.2.2 Windows 7 x64
Intel Core i7 3720QM 42 ? 2.60 4 (8 HT) pooler’s cpuminer 2.3.2 Windows 8 x64
Intel Xeon E3-1230 44.4 80 (TDP) 3.20 4 (8 HT) pooler’s cpuminer 2.2.2 Debian 6
Intel Xeon E31245 35.8 95 (TDP) 3.30 4 (8 HT) pooler’s cpuminer 2.2.2 Windows 7 x64
Intel Xeon E5-2690 170 135 (TDP) 3.0 8 (16 HT) pooler’s cpuminer 2.2.2 Windows 2012 STD x64
Intel Core i7 3770 ? 3.40 4 (8 HT) bfgminer 3.0.0 -t 16 openSUSE 12.3

AMD CPUs

The speed in kHash/s of a single core of a K10-based CPU can roughly be calculated multiplying the clock frequency in GHz by 1.85.

Model kHash/s Watts Clock (GHz) Cores Miner Command line arguments Operating system Notes
AMD Fusion E-350 2.4 18 (TDP) 1.60 2 pooler’s cpuminer 2.2.2 Debian 6
AMD Athlon 64 X2 5600+ 6.07 89 (TDP) 2.80 2 pooler’s cpuminer 2.2.2 Gentoo Linux, 64-bit
AMD Sempron 145 10.65 45 (TDP) 2.80 2 pooler’s cpuminer 2.2.2 Gentoo Linux, 64-bit
AMD Athlon II X3 425 @ Phenom II X4 B25 ~9.5 95(125) (TDP) 2.70 4 Ufasoft Coin version 0.56 -t 4 -v -g no Windows 7, 32-bit
AMD Phenom II X4 940 Black Edition 20 125 (TDP) 3.00 4 pooler’s cpuminer v? Debian 6, 2.6.32-5-amd64 nice 19
AMD Phenom II X4 955 Black Edition 22 125 (TDP) 3.20 4 pooler’s cpuminer 2.1.5 Windows 7 x64
AMD Phenom II X4 955 Black Edition 27.85 125 (TDP) 3.90 4 pooler’s cpuminer 2.1.5 Windows 7 x64
AMD Phenom II X4 965 Black Edition ~25 125 (TDP) 4.00 4 pooler’s cpuminer 2.1.2 Windows 7 x64 low priority
AMD Phenom II X6 1045T 30.4 95 (TDP) 2.70 6 pooler’s cpuminer v2.2.3 –s 6 –threads 6 Windows 7 x64
AMD Phenom II X6 1055T 34.6 125 (TDP) 3.10 6 pooler’s cpuminer v? Windows 7 x64 15% overclock
AMD Phenom II X6 1055T 40.1 95 (TDP) 3.50 6 pooler’s cpuminer 2.2.2 Gentoo Linux 25% overclock
AMD FX 6300 50.6 ? 4.50 6 pooler’s cpuminer 2.2.2 Windows 7 x64
AMD FX 8120 46 ? 3.25 8 pooler’s cpuminer 2.2.2 Windows 7 x64
AMD FX 8120 65 125 (TDP) 4.50 4M/8T ufasoft 64-bit miner Windows 7 x64 modifed with XOP instructions
AMD FX 8150 56 125 (TDP) 3.60 4M/8T pooler’s cpuminer 2.2.2 Ubuntu 11.10
AMD FX 8350 41 125 (TDP) 4 8 pooler’s cpuminer 2.2.2 Ubuntu 12.10
AMD FX 8350 65 125 (TDP) 4 8 pooler’s cpuminer 2.2.2 win 7 x64

Nvidia GPUs

Model kHash/s Watts Clock Mem Clock Miner Notes
GT440 18.5 ? 810 900 Cudaminer 2013-04-06 Stock clocks.
GT440 36 ? 900 1000 Cudaminer 2013-04-12 Overclocked. New version of cudaminer boosts performance even further. autotune set -l 12×2.
GT520 9 ? ? ? Cudaminer Stock running, stock clocks.https://bitcointalk.org/index.php?topic=167229.msg1744139#msg1744139
GT520 20.20 25 930 810 Cudaminer 2013-04-17 -C 2 -i 0, secondary card (no monitor)http://i.imgur.com/zSDPP1a.png
GT640 40 ? ? ? Cudaminer 2013-04-22 -l 82×2 -C 2 -i 0 4GB DDR3 memory on 128 bit bus
GTX260 46 ? ? ? Cudaminer 2013-04-10 -l S27x3 the GPU is the 216 core version.
GTX285 43 ? 680 1250 Reaper v13 Beta aggression 14
GTS450 33.8 106 783 1804 cgminer 2.11.4 intensity 12,standard card settings, win7 32 (intensity 16 – 35.1kH/s)
GTS450 39.5 105 920 2125 cgminer 3.1.1 (OC -Win7x64) setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_USE_SYNC_OBJECTS 1 -I 12 –auto-fan –gpu-memclock 2125 –gpu-engine 920
GTS450 76 ? 958 1704 Cudaminer 2013-04-14 -l 43×4
GTX450 37 ? ? ? Reaper v13 Beta
GTX460 100 ? ? ? Cudaminer 2013-04-14 -l 28×4
GTX460 134 ~105 930 1860 Cudaminer 2013-04-30 -i 0 -C 2 -m 1 -l 28×4 // MSI Afterburner to increase Core & Memory Clock. MSi N460GTX Hawk
GTX460 141 ~112 965 1960 Cudaminer 2013-04-30 -i 0 -C 2 -m 1 -l 14×8 // MSi N460GTX Hawk – OC’d to 1.0V using nVidia Inspector (Not very stable)
GTX460 110 ? 780 1800 Cudaminer 4-30-13 Default (runs 14×7)
GTX460 55 ? ? ? Reaper v13 Beta
GTX470 150 ? 830 851 Cudaminer 2013-04-09 (GPU clock 625->830, auto miner settings) proofhttp://imm.io/12st5
GTX550Ti 44 ? stock (911 MHz) stock Reaper v13 Beta 4 worksize 160, aggression 14, threads_per_gpu 1, sharethreads 8, lookup_gap 1, gpu_thread_concurrency 2047
GTX555 74 ? 736 1914 Cudaminer 2013-04-14 -l 12×6
GTX560 130 ? 950 1800 Cudaminer 2013-04-14 -l 14×8
GTX560 128 ? 975 2004 cudaMiner 2013-04-12 -l 168×2 EVGA GTX 560 2 GiB GDDR5 (Stock: 864 Core 2004 Memory)
GTX560 133 ? 940 2004 cudaminer-2013-04-30 keys -d 0 -i 0 -l 14×8, OS windows 7 x64, card model gigabyte GV-N56GOC-1GI
GTX560 SE 93 ? 830 1914 cudaMiner 2013-04-12
GTX560Ti 144 ? 900 2106 Cudaminer 2013-04-14 -l 32×4 EVGA SC 1024 MB GDDR5
GTX560Ti 218 ? ? ? Cudaminer 2013-04-22 -l 28×8 -C 2 Zotac 448 core edition
GTX560Ti 185 ? 865 1900 Cudaminer 2013-04-22 -l 22×8 Nvidia OEM Edition 1024MB
GTX560Ti 71 ? ? ? Reaper v13 Beta aggression 12
GTX560Ti 84 ? 1950 2150 Reaper v13 Beta aggression 17–stable for a few hours
GTX570 130 ? 1950 2150 CudaMiner Alpha https://bitcointalk.org/index.php?topic=167229.0
GTX570 120 ? 800 2000 Reaper v13 Beta worksize 128, aggression 14, threads_per_gpu 1 sharethreads 16, lookup_gap 2, gpu_thread_concurrency 10240
GTX580 150 ? ? ? Cudaminer 2013-04-30
GTX580 230 ? 911 2138 Cudaminer 2013-04-10 (Slight OC, auto miner settings) proofhttp://i.imgur.com/6mZN0b8.png in 32×7 config.
GTX580 (MSI Twin Frozr OC 250 ? 930 2300 Cudaminer 2013-04-10 (Slight OC, auto miner settings, get’s hot though).
GT640 (GT640-DCSL-2GD3) 25 65 1046 (OC) 1982 (OC) guiminer-scryp 0.03 preset 7770 modified: worksize: 128; intensity: 14 – card is a bit sensitive, can freeze system…
GTX650Ti (Gigabyte GV-N65TOC-1GI 80 110 stock stock Cudaminer -l 32×4 seems to be most stable setting… others can freeze system…
GTX660 125 ? 1203 stock Cudaminer 2013-04-09
GTX660Ti 150 ? 980 (1059) 3004 Cudaminer 2013-04-10 EVGA Superclocked+ 3GB RAM
GTX670 FTW 80 ? stock (1006 MHz) stock Reaper v13 Beta 4 worksize 576, aggression 15, threads_per_gpu 1, sharethreads 8, lookup_gap 2, gpu_thread_concurrency 8192
GTX670 106 ? 915 (1084) 3004 Cudaminer 2013-04-06
GTX670 115 ? 1015 (1176) 3104 Cudaminer 2013-04-06
GTX670 120 ? 1065 (1228) 3254 Cudaminer 2013-04-06
GTX670 158 ? 1050 (1129) 3004 Cudaminer 2013-04-17
GTX670 163 ? 705 (1129) 3004 Cudaminer 2013-04-29 PNY Flags: -C 2 -D -i 0 -l 56×5. 80C proof:http://imgur.com/n9V7Ca7
GTX670 190 ? 1019 (1097) 3004 Cudaminer 2013-04-30
GTX680 92 ? stock (1162 MHz) stock Reaper v13 Beta 4 worksize 576, aggression 15, threads_per_gpu 1, sharethreads 8, lookup_gap 2, gpu_thread_concurrency 8192
GTX680 (OC) 207 ? OC (1240) OC (6400) cudaminer-2013-04-14 Stratum Proxy >99% valid; -l 233×2 -i 0
Quadro 600 24.5 ? 640 800 cudaminer-2013-04-30 Stratum Proxy >99% valid; -l 32×4

ATI (AMD) GPUs

Model kHash/s Watts Clock Mem Clock Miner Notes
4770 18 ? 830 MHz 850 MHz cgminer 2.6.3 threads=1 intensity=10
4770 116 ? 850 MHz 850 Mhz cgminer 2.11.4 Threads=1 Worksize=128 Vectors=1 Thread_concurrency=2560 Intensity=11
4850 74-80 ? 625 MHz 993 MHz cgminer 2.11.4 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 threads=1 intensity=13 temp=64C Windows 7 64-bit
4850 90 ? 625 MHz 993 MHz cgminer 2.11.4 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 threads=1 intensity=14 temp=68C Windows 7 64-bit
4850 100 ? 625 MHz 993 MHz cgminer 2.11.4 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 threads=1 intensity=15 temp=71C Windows 7 64-bit
4850 110 110 650 MHz 993 MHz guiminer-scrypt v0.03/cgminer Threads=1 Worksize=128 Vectors=1 Thread_concurrency=3200 Intensity=16 Extra flags: –gpu-engine 650 –gpu-memclock 993 -auto-fan
4870 127 ? 830 MHz 490 MHz cgminer 2.6.3 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 fan=100 voltage=1.25 memclock=490 engine=830 engineshaders=800 thread-concurrency=6144 lookup-gap=2 threads=1 intensity=15 temp=62C Xubuntu 12.04 x64 repo ATI drivers and SDK 2.6 http://goo.gl/vP3G9
4870×2 284 ? 750 MHz 900 MHz Reaper Thread concurrency 4192 Worksize 128 Vectors 1 I 18 Threads 1. Catalyst 13.1 Legacy SDK 2.8
4890 145 ? 835 MHz 575 MHz cgminer 2.7.5 Powercolor HD4890 113-B79002-103 Win 7 x64 Catalyst 12.4 SDK 2.7 72 C Fanspeed 55% VDDC 1.312 –thread-concurrency 6400 –gpu-threads 1 –intensity 15 –lookup-gap 2 –worksize 128 –no-submit-stale –auto-fan –temp-target 75 –gpu-engine 835-835 –gpu-memclock 575
5450 21.6 ? 891 MHz 875 MHz cgminer 2.11.3 –intensity 18 –lookup-gap 2 –shaders 80 –worksize 256 // Arch linux, Catalyst 13.1-4
5570 90 ? 775 MHz 790 MHz Reaper v13 Beta 4 x64 worksize 128, vectors 1, aggression 15, threads_per_gpu 2, sharethreads 24, lookup_gap 2, gpu_thread_concurrency 4096 / Win8 x64 / Catalyst 12.8 / Proof:http://i.imgur.com/tgHGr2I.png
5670 ~100 ? 850 MHz 1000 MHz cgminer 2.11.4 –worksize 128 –lookup-gap 2 –thread-concurrency 3048 -g 2 –intensity 16
5750 179 ? 870 MHz 1428 MHz cgminer 2.11.3 –intensity 16 -g 1 –thread-concurrency 4320 –lookup-gap 2 –worksize 256 GPU overclocked via MSI Afterburner, at stock ~143 kHash/s, Win7 x64
5750 196.2 ? 925 MHz 1150 MHz cgminer 3.0.0 –intensity 18 -g 1 –thread-concurrency 6016 –worksize 256 –lookup-gap 2 –gpu-engine 925 –gpu-memclock 1150 , Win7 x64
5770 167 ? 725 MHz 1100 MHz cgminer 2.6.1 –shaders 800 –intensity 18 –worksize 256 –lookup-gap 2 –auto-gpu –auto-fan @ Debian Linux
5770 210 ? 910 MHz 1250 MHz Reaper V13 Beta 4 x644 256Work, Agg 17, 4 GPU Threads, Win7 x64
5830 282 ? 850 MHz 1250 MHz cgminer 2.6.4 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 fan=auto memclock=1250 engine=950 lookup-gap=2 threads=1 intensity=20
5830 290 ? 875 MHz 1200 MHz Reaper v13 Beta Worksize 64, Aggression 18
5830 303 ? 917 MHz 1250 MHz cgminer 2.11.3 Ubuntu Server 12.04 x64, driver 11.11, APP SDK 2.5, GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 fan=auto memclock=1250 engine=917 lookup-gap=2 threads=1 intensity=20 shaders=1120 thread_concurrency=5600
5850 290 ? 790 MHz 1100 MHz Reaper v13 Beta 4 x86 256 Worksize, Aggression 15, gpu_thread_concurrency 6500, BAMT Linux x86, Catalyst 12.6, SDK 2.6
5850 312 ? 775 MHz 1000 MHz Reaper v13 Beta 4 x64 256 Worksize, Aggression 18, gpu_thread_concurrency 6500, Win7 x64, Catalyst 12.6, SDK 2.6
5850 383 ? 900 MHz 1000 MHz Reaper v13 Beta 4 x64 256 Worksize, Aggression 18, gpu_thread_concurrency 6500, Win7 x64, Catalyst 12.6, SDK 2.6
5850 396 ? 930 MHz 1179 MHz GUIMiner-scrypt alpha – latest version 04/13 128 Worksize, Intensity 19, gpu_thread_concurrency 5824, Win7 x64, Catalyst 13.1, SDK 2.5, ASUS EAH DIRECTCU, very stable at these settings for this card
5850 401.9 170 944 MHz 1180 MHz cgminer-3.1.0-Win cgminer –scrypt -o –worksize 256 –lookup-gap 2 –thread-concurrency 5824 -g 1 –intensity 19 (Stale .50-1%). Win7 x64, 13.5B2ccc, SDK 13.5B2 supplied, pekv2http://pastebin.com/zedRaNTb
5850 401.4 170 944 MHz 1180 MHz cgminer-3.1.0-Win cgminer –scrypt -o –worksize 256 –lookup-gap 2 –thread-concurrency 5824 -g 1 –intensity 19 (Stale .50-1%). Win7 x64, 13.5B2ccc, SDK 13.5B2 supplied, pekv2http://pastebin.com/zedRaNTb
5870 226 ? 850 MHz 1200 MHz Reaper v13 Beta
5870 310 ? 920 MHz 1250 MHz Reaper v13 Beta XFX board, 5 GPU Threads @ Aggression 18
5870 338 ? 725 MHz 1200 MHz cgminer 2.6.1 –shaders 1600 –intensity 18 –worksize 256 –lookup-gap 2 –auto-fan –auto-gpu @ Debian Linux
5870 394 ? 850 MHz 1200 MH cgminer 2.11.4 cgminer –scrypt -o –shaders 1600 –intensity 18 –worksize 256 -g 1 –thread-concurrency 6144
5870 400 ? 850 MHz 1200 MH cgminer 2.11.3 cgminer –scrypt -o –shaders 1600 –intensity 18 –worksize 256 -g 1 –thread-concurrency 7168
5870 422 ? 925 MHz 1225 MH Reaper v13 Beta intensity 18 worksize 256 thread-concurrency 7168
5870 435 ? 900 MHz 1300 MHz cgminer 2.11.3 via guiminer scrypt sapphire card, 1 gpu thread, 7500 thread concurrency, agression 18, worksize 256, win 7 64-bit
5870 440 ? 970 MHz 1200 MHz Reaper v13 Beta Refference card, 5 GPU Threads @ Aggression 18
5870 442 ? 960 MHz 1300 MHz Reaper v13 Beta 5 GPU Threads @ Aggression 18 Thread Concurrency 7500
5970 750 ? 900 MHz 1100 MHz Reaper v13 Beta 5 GPU Threads @ Aggression 17
5970 760 ? 800 MHz 1000 MHz Reaper v13 Beta worksize 256 @ aggression 16 @ threads_per_gpu 1 @ sharethreads 10 @ lookup_gap 2 @ gpu_thread_concurrency 5632
5970 800 ? 844 MHz 1250 MHz cgminer 2.11.3 Ubuntu Server 12.04 x64, driver 11.11, APP SDK 2.5, GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 fan=auto memclock=1250 engine=944 lookup-gap=2 threads=1 intensity=20 shaders=1600 thread_concurrency=8000 worksize=128
6320 5 ? 600 MHz 600 MHz cgminer 2.11.3 Intensity 9
6320 14 ? 600 MHz 1333 MHz cgminer 2.11.3 I12, Worksize 64 (E-450 APU, Shared Memory)
6450 16 ? 720 MHz 1000 MHz Reaper v13 Beta 4 worksize 64, aggression max, threads_per_gpu 2, sharethreads 6, lookup_gap 2, gpu_thread_concurrency 640,
6450 23-24 ? 625 MHz 667 MHz cgminer 2.11.3 –intensity 9 –worksize 64 -g 1 (Proof: http://i.imgur.com/WMX3iI6.png )
6570 55 ? 650 MHz 900 MHz cgminer version 2.10.5 @ 256 Worksize @ Aggression 16 @ gpu_thread_concurrency 5760
6570 84 ? stock stock GUIMiner scrypt 0.03, Reaper v13 beta 4 Worksize: 256, Thread concurrency: 5760, Intensity: 16, Vectors: 1, GPU threads: 2
6670 127 ? 900 MHz 1000 MHz CGMiner-scrypt v3.0.1 –thread-concurrency 2400 –intensity 18 –worksize 256 -g 1 –gpu-engine 900 –gpu-memclock 1000
6750 160 ? 735 MHz 1150 MHz GUIMiner-scrypt alpha v0.2 @ 128 Worksize @ intensity 16 @ gpu_thread_concurrency 4096 @ i GPU thread @ 1 Vector
6770 210 ? 950 MHz 1300 MHz Reaper v13 Beta @ 256 Worksize @ Aggression 16 @ gpu_thread_concurrency 3100
6770 143 ? 800 MHz 1100 MHz Reaper v13 Beta 4 @ 256 Worksize @ Aggression 11 @ gap 2 @ gpu_thread_concurrency 3096 // MSI Default Clock
6770 200 ? 950 MHz 1000 MHz cgminer export GPU_USE_SYNC_OBJECTS=1 ; export GPU_MAX_ALLOC_PERCENT=100 ; –scrypt –worksize 256 –lookup-gap 2 –thread-concurrency 8192 -g 1 –intensity 18 ; Gentoo x64, driver 12.6, SDK 2.7
6790 200 150 800 MHz 900 MHz cgminer 2.6.6 worksize=128 intensity=13 temp=71C Windows XP 32-bit
6850 216 ? 800 MHz 1025 MHz Reaper v13 Beta 4 x64 256 Worksize, Aggression 18, gpu_thread_concurrency 6144, Win7 x64, Catalyst 12.6, SDK 2.6
6850 260 – 313 ? 835 MHz 1100 MHz cgminer 2.11.4 256 Worksize, Aggression 18, gpu_thread_concurrency 6144, Win8 x64, Catalyst 13.1
6850 259 ? 925 MHz 1025 MHz Reaper v13 Beta 2 GPU Threads @ 256 Worksize @ Aggression 17
6850 271 ? 945 MHz 1005 MHz Reaper v13 Beta 2 GPU Threads @ 128 Worksize @ Aggression 17
6850 261 250W (load) 920 MHz 1100 MHz cgminer 2.11.4 -I 17 –worksize 128 –shaders 960 –thread-concurrency 6144
6850 x2 275 400W (Both cards) 1050 MHz 1050 MHz cgminer 2.11.4 –scrypt -I 17 –worksize 256 –shaders 960 –thread-concurrency 3840 –Vectors 2 –lookup-gap 2 -g 2 ; Windows 7 x64, Catalyst 13.1, SDK 2.7, HIS Radeon 6850, Air Cooled, Stable, Temperature 66-73°C Both cards, Proofhttp://imgur.com/dIsYQDN
6870 293 ? 900 MHz 1050 MHz cgminer 3.1.0 DISPLAY=:0 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 ./cgminer –scrypt –url *** –user *** –pass *** –intensity 15 –auto-fan –thread-concurrency 6720 –worksize 64; Ubuntu Server 12.04 LTS amd64, driver 12.6, SDK 2.6, Sapphire Radeon HD 6870, stock speeds, no hardware errors
6870 320 ? 900 MHz 800 MHz cgminer export GPU_USE_SYNC_OBJECTS=1 ; export GPU_MAX_ALLOC_PERCENT=100 ; –scrypt –worksize 256 –lookup-gap 2 –thread-concurrency 8192 -g 1 –intensity 19 ; Gentoo x64, driver 12.6, SDK 2.7
6870 355 ? 1050 MHz 1150 MHz cgminer 2.7.5 XFX Black Edition 113-687AZNB-10 Win 7 x64 Catalyst 12.4 SDK 2.5 77C/83C Fanspeed 85% VDDC 1.250 –thread-concurrency 6720 –gpu-threads 1 –intensity 18 –lookup-gap 2 –worksize 64 –no-submit-stale –auto-fan –temp-target 75 –gpu-engine 1050-1050 –gpu-memclock 1150
6870×2 600 330 900 MHz 1150 MHz cgminer 3.0.0 x64 PowerColor Radeon HD 6870×2 Ubuntu 12.04 x64 Catalyst 11.1 SDK 2.5 77C/83C Fanspeed 85% –thread-concurrency 6720 –gpu-threads 1 –inten sity 16 –lookup-gap 2 –worksize 64 –no-submit-stale
6930 392 ? 1000 MHz 900 MHz cgminer export GPU_USE_SYNC_OBJECTS=1 ; export GPU_MAX_ALLOC_PERCENT=100 ; –scrypt –worksize 256 –lookup-gap 2 –thread-concurrency 8192 -g 1 –intensity 18 ; Gentoo x64, driver 12.6, SDK 2.7
6950 398 ? 800 MHz 1350 MHz Reaper v13 Beta Stock Shaders @ Aggression 18, gpu_thread_concurrency 5632
6950 420 220 840 MHz 1325 MHz cgminer 2.11.4 win7 –worksize 256 –lookup-gap 2 –thread-concurrency 7040 -g 1 –intensity 19
6950 425 ? 860 MHz 1450 MHz cgminer 2.11.4 stock shaders, thread_concurrency=8064, Intensity=18 , worksize was 256 by default, 4GB RAM, VisionTek 1GB 6950
6950 426 ? 865 MHz 1300 MHz Reaper v13 Beta Stock shaders –thread-concurrency 8192 –intensity 18
6950 445 ? 900 MHz 1450 MHz cgminer 2.11.4 xubuntu Stock Shaders. –intensity 20 –worksize 256 –gpu-memclock 1450 –gpu-engine 900 –thread-concurrency 8128
6950 445 ? 890 MHz 1300 MHz Reaper v13 Beta 4 Stock Shaders @ 256 Worksize, Aggression 19, gpu_thread_concurrency 8192
6950 450 ? 840 MHz 1250 MHz Reaper v13 Beta 1 aggression 16 threads_per_gpu 2 sharethreads 10 lookup_gap 2 gpu_thread_concurrency 6144 /zhezhe
6950 450 250 900 MHz 1375 MHz cgminer 2.11.4 win7 –worksize 256 –lookup-gap 2 –gpu-engine 900 –gpu-memclock 1375 –thread-concurrency 7040 -g 1 –intensity 19
6950 484 ? 920 MHz 1300 MHz Reaper v13 Beta 4 Shaders Unlocked (not 6970 bios), 256 Worksize, Aggression 18, threads_per_gpu 2, sharethreads 4, lookup_gap 2, gpu_thread_concurrency 6144, long_polling yes
6950 489 ? 900 MHz 1400 MHz cgminer 3.1.0 Win7-x64 Unlocked shaders (6970 bios), -d 0 -w 256 -v 1 -I 18 -g 2 -l 1 -T –lookup-gap 2 –thread-concurrency 7500. Catalyst 12.8, Driver: 9.14.10.0924
6950 495 ? 916 MHz 1375 MHz cgminer 3.1.0 xubuntu Unlocked shaders (6970 bios), –worksize 256 –intensity 19 –gpu-threads 1 –lookup-gap 2 –thread-concurrency 7500
6950 508.5 ? 950 MHz 1320 MHz Reaper v13 Beta 4 aggression 18 threads_per_gpu 2 (4 when cpu mining prevents loss of hashrate with all cpu cores fully loaded) worksize 256 sharethreads 4 lookup_gap 2 gpu_thread_concurrency 8144 Sapphire toxic 1536 SP
6950 522 ? 955 MHz 1270 MHz Reaper v13 Beta 4 Shaders Unlocked (not 6970 bios) @ 256 Worksize, Aggression 19, gpu_thread_concurrency 8192
6950×2 896 466 900 MHz 1375 MHz cgminer 2.11.4 win7 –worksize 256 –lookup-gap 2 –gpu-engine 900 –gpu-memclock 1375 –thread-concurrency 7040 -g 1 –intensity 19
6970 427 ? 900 MHz 1375 MHz cgminer v 2.11.4 –scrypt –worksize 256 -g 2 -I 15 –lookup-gap 2 –gpu-engine 900 –gpu-memclock 1375 –shaders 1564 — Card is a Gigabyte GV-R697OC-2GD, Temp: 67.0°C, Catalyst 13.1 Proof:http://img402.imageshack.us/img402/6034/13914411.jpg
6970 480.3 ? 880MHz 1450 MHz Reaper v13 Beta 4 worksize: 256, vectors: 1, aggression: 20, threads per gpu: 1, sharethreads: 32, lookup gap: 2, gpu thread concurrency: 16256, Win 7 x64, 13.1 drivers, Fan set at 90%, week average- steady around 478-482 throughout, temperature 70 degrees C, room ambient is 18 degrees C,
6970 481 ? 900MHz 1550 MHz cgminer 2.11.4 xubuntu –intensity 20 –worksize 256 –gpu-memclock 1550 –gpu-engine 900 –thread-concurrency 8128
6970 512 ~245 945 MHz 1525 MHz CgMiner 2.11.4 Win 7 x86 Catalyst 12.4 SDK 2.7
6990 800 – 900 ~435 880 MHz 5000 MHz Reaper v13 Beta 4 aggression 17 / threads_per_gpu 1 worksize 256 / sharethreads 24 / lookup_gap 2 / gpu_thread_concurrency 8144 (stale ~ 6,5%) (100% fan Arctic Cooling Accelero Twin Turbo 6990)
6990×2 1580 – 1780 ~880 880 MHz 5000 MHz Reaper v13 Beta 4 aggression 17 / threads_per_gpu 1 worksize 256 / sharethreads 24 / lookup_gap 2 / gpu_thread_concurrency 8144 (stale ~ 4,5%) (100% fan Arctic Cooling Accelero Twin Turbo 6990)
7660G 49 ? 686 MHz 686 MHz cgminer 2.11.4 –thread-concurrency 2096 -I 15 -g 1 -w 64
7750 98 ? 800 MHz 800 MHz cgminer Intensity: 11
7750 151 ? 880 MHz 1125 MHz cgminer 3.1.0 DISPLAY=:0 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 cgminer –scrypt –url *** –user *** –pass *** –intensity 15 –auto-fan –worksize 64; Gentoo amd64, driver 13.1, Gigabyte GV-R775OC-1GI, factory overclocked, no hardware errors
7750 175.5 ? 1020 MHz 1250 MHz Guiminer –scrypt alpha:cgminer –thread-concurrency 7168 –Shaders 512 -I 15 -g 1 -w 64-128 -v 1(lower worksize is more efficient on stales, i only get 10% or less stales.)(super unstable, if not mining. otherwise can use firefox without issue while mining)(weird?) (1055 mV)(runs at 61 degrees with +/- 1 degree at times. fan at 80%)
7750 174 ? 1024 MHz 1150 MHz cgminer –thread-concurrency 8000 -I 17 -g 1 –gpu-engine 1024 -gpu-memclock 1150 (The important part is to go high on thread concurrency with only 1 thread)
7750 141 ~55 800 MHz 1125 MHz cgminer 2.11.3 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 –scrypt –intensity 11 –shaders 512 –gpu-threads 2 –worksize 64, Kubuntu 12.04 amd64, Catalyst 13.1, default clocks, desktop fully usable. Higher or lower intensity is useless. Proof: http://i.imgur.com/V3zbcjU.png
7750 146 ? 830 MHz 1125 MHz cgminer 3.1.0 GPU_MAX_ALLOC_PERCENT=100 GPU_USE_SYNC_OBJECTS=1 –scrypt –intensity 11 –shaders 512 –gpu-threads 2 –worksize 64, Windows 8 64-bit, Catalyst 13.2
7750 x2 355 ~110 1000 MHz 1300 MHz cgminer 2.11.3 GPU_MAX_ALLOC_PERCENT=100 –scrypt –intensity 11 –shaders 512 –gpu-threads 2 –worksize 64, Win7 x64 amd A8 black edition, Catalyst 13.1, MSI AB O/C to 1000/1300, thanks to the guy above me for most of the settings
7770 ~150 ? 1000 MHz 1125 MHz cgminer 2.11.4 –intensity 12 –temp-target 69 –auto-fan –auto-gpu
7770 204 ~80 940 MHz 1525 MHz cgminer 3.1 –gpu-engine 940 –gpu-memclock 1525 –intensity 18 // Sapphire OC version, hashrate is mostly dependent of memory clock on this model – First increase memory clock then tune gpu clock (had to downclock gpu in my case)
7770 140 ? 1000 MHz 1125 MHz Reaper v13 Beta 4 @ 256 Worksize @ Aggression 16 @ threads_per_gpu 1 @ sharethreads 2 @ lookup_gap 2 @ gpu_thread_concurrency 6144 // Default Clock
7770 170 100 965 MHz 1250 MHz Reaper v13 Beta 4 worksize 256 aggression 18 threads_per_gpu 1 sharethreads 24 lookup_gap 2 gpu_thread_concurrency 8000
7790 207 75 1000 MHz 1600 MHz cgminer 2.11.3 Intensity 17 @ gpu_thread_concurrency 8000
7790 244 65 830 MHz 1500 MHz cgminer 2.11.3 -I 17 –worksize 128 –thread-concurrency 8000 –gpu-engine 830 –gpu-memclock 1500 -G 1
7850 345 ? 950 MHz 600 MHz Reaper v13 Beta 4 Intensity 19 (8192 threads) (Only stable/fast at intensity 11(4500)/12(5000)/19(8192))
7850 350 ? 1000 MHz 1350 MHz cgminer 2.10.5 Intensity 13 (any higher gives lower hashrate) all other cgminer settings are default
7850 350 ? 1000 MHz 1300 MHz cgminer 2.11.3 Intensity 17, voltage 1.0v
7850 382 130 1120 MHz 1250 MHz cgminer 2.11.4 -I 17 –worksize 256 –thread-concurrency 8192 -v 1 –shaders 1024 (Win7 x64, Catalyst 13.1, Athlon64 X2 4000+ 2.1GHz, RAM 2Gb, HIS 7850 2Gb)
7850 385 ? 1120 MHz 1300 MHz cgminer 2.11.4 –intensity 19 –thread-concurrency 27164 (Win7 x64, Catalyst 13.1, A10-5800K 3.8GHz, RAM 8Gb, ASUS 7850 2Gb V2, use GPU_MAX_ALLOC_PERCENT 100 & GPU_USE_SYNC_OBJECTS 1)
7850 411 ? 1200 MHz 1365 MHz cgminer 2.11.3 -I 19 –worksize 256 –thread-concurrency 16000 –gpu-engine 1200 –gpu-memclock 1365 -G 1
7870 ~381kH/s ? 810 MHz 1450 MHz Reaper v13 Beta (SAPPHIRE 7870 GHZ EDITION, Windows 7 x64, Catalyst 13.3 Beta) (GPU Temp 65C, FAN 61%) worksize 256, intensity 18, threads_per_gpu 1, sharethreads 20, lookup_gap: 2, thread_concurrency 15232
7870 Ghz 394kH/s ? 925 MHz 1375 MHz cgminer 2.11.4 TC 14208, WS 256, Intensity 19, G 1
7870 Ghz 397kH/s ? 925 MHz 1450 Mhz cgminer 3.2.2 TC15360, -w 256 –shaders 1280 -g1 –gpu-engine 925 –gpu-mem 1450 –gpu-powertune 20 –lookup-gap 2
7870 Ghz Interactive ~385kH/s ? 1190 MHz 1500 MHz cgminer 2.11.4 Intensity 12, , tc: 8192, g: 2, lg: 2, ws: 256
7870 Ghz Interactive 400kH/s 350WU/m ? 1300 MHz 1500 MHz cgminer 2.11.3 Intensity 12, voltage 1.219v, tc: 8192, g: 2, lg: 2, ws: 256
7870 Ghz Overnight 425 ? 1000 MHz 1500 MHz cgminer 2.11.3 Intensity 18, voltage 1.219v, tc: 15232, g: 1, lg: 2, ws: 256
7870 Ghz Overnight 470 ? 1139 MHz 1500 MHz cgminer 3.1.0 http://img90.imageshack.us/img90/1549/cgminer7870470.jpg
7870×2 XFX DD 750 400 970 MHz 1450 MHz cgminer 2.11.4 shaders 1280, intensity 17, worksize 256, g 1, lookup-gap 2, thread-concurrency 14208, gpu-engine 970, gpu-memclock 1450, auto-fan, win8
7950 ~600 ? 1000 MHz 1250 MHz cgminer 2.11.4 -I 20 –thread-concurrency 24768 –worksize 256 Win7, 13.3 beta drivers (Currently running avg : 1.2 Mh/s with 2x).
7950 ~610 ? 1000 MHz 1500 MHz cgminer –shaders 1792 -I 20 -w 256 –lookup-gap 2 –thread-concurrency 24000 -g 1 Win7, 13.2 drivers (Currently running avg : 1.2 Mh/s with 2x).
7950 ~620 ? 1025 MHz 1480 MHz Reaper v13 Beta 4 256 Worksize, vectors 1, Aggression 18, threads_per_gpu 1, sharethreads 32, lookup_gap 2, gpu_thread_concurrency 24576. Win7, 13.2 drivers, 1100mV, 1025core, 1480mem (Currently running 1200+ kh/s with 2x).
7950 631 ? 1100 MHz 1500 MHz cgminer 2.11.4 –shaders 1792 -I 19 -w 256 –lookup-gap 2 –thread-concurrency 24000 -g 1 Windows 7, Catalyst 13.2, temps sitting at 77/78c with fan on 100%
7950 620 ? 1100 MHz 1500 MHz cgminer 3.1.0 –thread-concurrency 22400 –shaders 1792 –gpu-engine 1100 –gpu-memclock 1500 –temp-target 75 -I 20 -w 256 –lookup-gap 2 –gpu-powertune 20 (Sapphire Vapor-X @ 65c)
7950 655 ? 1075 MHz 1650 MHz cgminer 2.11.13 –shaders 1792 –gpu-engine 1075 –gpu-memclock 1650 –temp-target 75 -I 20 -w 256 –lookup-gap 2 –thread-concurrency 21712 -g 1 Win8, 13.3 beta drivers
7950 ~660 ? 1200 MHz 1700 MHz GUIMiner Scrypt 0.3 Thread-concurrency 21712, Worksize 256, GPU Threads 1, Win8, 13.1, ASUS 7950 DCUII-Rev2 @ 1.25v
7950 520 ? 900 MHz 1250 MHz cgminer 2.11.4 –shaders 1792 –gpu-engine 900 –gpu-memclock 1250 –temp-target 80 -I 17 -w 256 –lookup-gap 2 –thread-concurrency 23040 -g 1 Ubuntu 12.04, AMD 13.4 drivers, runs at about 84 C
7950 550 ? 1000 MHz 1450 MHz Reaper v13 Beta 4 @ 256 Worksize @ vectors 1 @ Aggression 20 @ threads_per_gpu 1 @ sharethreads 32 @ lookup_gap 2 @ gpu_thread_concurrency 24576
7950 617 ? 1050 MHz 1575 MHz reaper v13 beta 4 Aggression 20, GPU Thread Concurrency: 24768, Vectors: 1, Lookup Gap: 2, Work Size: 256, Share Threads: 32, Threads Per GPU: 1, avg temp: 83 degrees C (air conditioned server room – ambient 18 degrees), 13.1 drivers, Win7 x64, fan speed set to 90%, is an XFX Black Edition (Factory OC’d- and then tweaked with MSI AfterBurner)- speed quoted is average over a week.
7950 627 ? 1050 MHz 1450 MHz cgminer 3.2.1 -thread-concurrency 21712 -w 256 -i 19 –lookup-gap 2 -g 1 –gpu-powertune 20 // 1x Sapphire Vapor-X 7950 OC (factory OC + manual OC), avg temp is 65-69°C (depending on ambient temperature, mostly low temperatures), Catalyst 13.1, Win7 x64.
7950 662 ? 1100 MHz 1600 MHz cgminer 3.1.0 –thread-concurrency 21712 -w 256 -I 20 –lookup-gap 2 -g 1 –gpu-powertune 20 Catalyst 13.3 beta drivers, default openCL, win7 x64, Cards are Sapphire Dual-X 7950s.
7950 684 ? 1138 MHz 1500 MHz cgminer 3.1.0 –thread-concurrency 22400 -w 256 -I 20 –lookup-gap 2 -g 1 –gpu-powertune 20 Catalyst 13.4, default openCL, win8 x64, stock cooler with a modification ((( (92C), MSI 7950 reference with BOOST, only benchmarkhttp://uploads.ru/lHfQ0.jpg
7950×2 1354 ? 1150 MHz 1500 MHz cgminer 3.1.0 –gpu-powertune 20 –gpu-engine 1150 –gpu-memclock 1500 –temp-target 78 -I 20 -w 256 –lookup-gap 2 -g 1 Catalyst 13.4 drivers, xbuntu13.4, Cards are Sapphire Dual-X 7950s.
7970 631 290W 925 MHz 1375 MHz cgminer 3.1.0 –worksize 256 -v 1 -I 13 -g 2 –thread-concurrency 8192 –lookup-gap 2 –shaders 2048 –temp-target 75 –temp-overheat 80 –temp-cutoff 85 –auto-fan –gpu-fan 0-80. 13.5beta2 catalyst drivers, SAPPHIRE HD 7970 3GB GDDR5 (11197-11) not overclocked. Running at 75° – 80° dependant on weather. Wattage measured at power plug with an istrument. Proof:http://i42.tinypic.com/34exdsh.jpg
7970 522 250w TDP 950 MHz 1700 MHz Reaper v13 Beta 4 @ 256 Worksize @ vectors 1 @ Aggression 13 @ threads_per_gpu 1 @ sharethreads 32 @ lookup_gap 2 @ gpu_thread_concurrency 24576 — RAM OC’d to 1866MHz (Affect unknown), 13.2 drivers. A higher aggression results in lag and a lower rate. Full build: http://pcpartpicker.com/p/CLNL Would love to see the magic formula for 600KHash/s+
7970 522 250w TDP 950 MHz 1700 MHz Reaper v13 Beta 4 @ 256 Worksize @ vectors 1 @ Aggression 13 @ threads_per_gpu 1 @ sharethreads 32 @ lookup_gap 2 @ gpu_thread_concurrency 24576 — RAM OC’d to 1866MHz (Affect unknown), 13.2 drivers. A higher aggression results in lag and a lower rate. Full build: http://pcpartpicker.com/p/CLNL Would love to see the magic formula for 600KHash/s+
7970 525 ? 1050 MHz 1900 MHz cgminer 2.11.4 -g 2 -I 18 -w 256 –gpu-powertune 20 –lookup-gap 2 –shaders 2048 –gpu-memclock 1900 –gpu-engine 1050. Card is XFX Radeon HD 7970 Double D 3GB DDR5 2XmDP HDMI
7970 737 1050 MHz 1250 MHz cgminer 2.11.4 –thread-concurrency 8192 -I 13 -g Card is a Powercolor HD7970 OC, Catalyst 13.1. voltage= 1.062
7970 580 ? 1170 MHz 1600 MHz Reaper v13 Beta 4 @ 256 Worksize @ vectors 1 @ Aggression 13 @ threads_per_gpu 1 @ sharethreads 28 @ lookup_gap 2 @ gpu_thread_concurrency 24576, 13.1 drivers. — Gigabyte GV-R797OC-3GD (GPU & RAM overclocked)
7970 770 ? 1130 MHz 1900 MHz cgminer v 2.11.3 –scrypt –gpu-engine 1130 –gpu-memclock 1900 –shaders 2048 –thread-concurrency 8192 -I 13 -g 2 -w 256 –lookup-gap 2 — Diamond reference card, full watercooled block, running at 1.150V @ 43C. Proof:http://i.imgur.com/n5eZ03d.png
7970 730 ? 1050 MHz 1700 MHz cgminer v 3.1.0 –scrypt –gpu-engine 1050 –gpu-memclock 1750 –shaders 2048 –thread-concurrency 8192 -I 13 -g 2 -w 256 –lookup-gap 2 — MSI Lightening Boost Edition (Can be pushed to >750 Kh/s with some more tweaking) Proof:http://imgur.com/bUicPyN
7970 750 ? 1085 MHz 1500 MHz cgminer v 2.11.2 –scrypt –worksize 256 -g 2 -I 13 –lookup-gap 2 –gpu-engine 1085 –gpu-memclock 1500 –shaders 2048 — Card is a Gigabyte GV-R797OC-3GD, Temp: 70.0°C, 1.170V, Catalyst 13.1
7970 800 ? 1130 Mhz 1935 Mhz Cgminer 2.11.4 -g2 -i 13 -w 256 –thread-concurrency 20480 Full water cooled Sapphire 7970 reference with OC edition BIOS update 55º/60º.http://i1270.photobucket.com/albums/jj601/emmanuel_ortiz1/800_zps97f7364d.jpg@Sweeppicking
7970×2 1415 ? 1035 MHz 1650 MHz cgminer v 2.11.4 –scrypt –shaders 2048 –thread-concurrency 8192 -I 13 -g 2 -w 256 2 Gigabyte Windforce cards, air cooled. Top card 85C, bottom card 66C. Catalyst 13.1. Display Driver 9.12. Proof: http://i.imgur.com/lKHVJXN.png
7970×3 2254 1050W 1085 MHz 1500 MHz cgminer v 3.1.1 –scrypt –worksize 256 -g 2 -I 13 –lookup-gap 2 –thread-concurrency 8192 –shaders 2048 -d 0 -d 1 -d 2 –gpu-engine 1080,1080,1080 –gpu-memclock 1500,1500,1500 –gpu-map 1:0,0:1 –gpu-map 0:1,1:0 –temp-cutoff 90,90,90 –temp-target 79,79,79 –api-listen –api-allow W:127.0.0.1 –failover-only 3x PowerColor(AX7970-3GBD5-2DHV3), air cooled. Top card 77C, middle 63 bottom card 78C. OS Win 8 x64 (Use Procexp Systerinals to set Realtime priority for cgminer.exe proces) CPU sempron 145, MTB Gigabyte 990FXA-UD3 Catalyst 13.1. Display Driver 9.12. Proof:http://imageshack.us/a/img839/9156/7970powercolorav.png
7990×2 2252 ? 1075 MHz 1700 MHz cgminer v 2.11.4 –scrypt –intensity 13 –gpu-engine 1075 –gpu-memclock 1700 –thread-concurrency 14336 — Cards Club3D CGAX-7999 , Temp: 66.0-84°C, Catalyst 13.1 Proof: https://imageshack.us/scaled/large/607/proof7990.png
7990×2 2305 ? 1090 MHz 1725 MHz cgminer v 3.1.0 –scrypt -I 13 –thread-concurrency 8192 -W 256 -g 1 –gpu-engine 1090 –gpu-memclock 1725 — Cards Club3D CGAX-7999 , Temp: 70-87C, Catalyst 13.1 Proof: http://img24.imageshack.us/img24/5343/imagetfc.jpg

Laptop/Portable

Why you’d want to run this on a laptop is beyond me…

Model kHash/s Watts CPU (MHz) Memory (MHz) Miner Command line arguments Operating system Notes
ATI 8600M GT 5 ? ? ? CudaMiner 4-22-13 Dell 1520 Windows Vista
ATI 9600M GT 9.6 ? ? ? Cudaminer 2013-04-14 on Ubuntu 12.4, 32 bit
GT555M 34 ? ? Cudaminer 2013-04-30 Default options Windows 8 Pro 64-bit
GT650M 20 ? 735 – 850 900 Reaper v13 Beta 4 Stock hardware. Worksize 128, aggression 14, threads_per_gpu 1. Higher settings are unstable.
GT650M 34 ? 950 900 Cudaminer 2013-04-30 -l 6×6
GTX460M 30 ? 675 1250 Reaper v13 Beta aggression 15
GTX460M 55 ? ? ? Cudaminer 4-22-13 Default (Sager NP8130)
Geforce GTX 670MX 85-90 ? 736 1600 Cudaminer 4-22-13 -i 0 –no-autotune -C 1 ; 2 instances of Cudaminer running Windows 8 64-bit
Quadro K1000M 16 ? 850 Cudaminer 2013-04-30 Windows 8 64-bit Temp ~69c, ThinkPad W530
ATI 6990M (2 in M18X) ~360 ? ? ? cgminer –scrypt -o ? -u ? -p ? –thread-concurrency 5600,5600 -g 1 -w 128,128 -I 11,16 –no-submit-stale Windows 7 x64 Temps: 80~82 / 76~78 — +40~80 Khashes w/ better cooling & -I 17,17
ATI 7400M (HP8560p) 30-32 ? 750 MHz 900 MHz Reaper v13 Beta 4 worksize 64 threads_per_gpu 2 aggression 9 sharethreads 1 lookup_gap 2 gpu_thread_concurrency 800
ATI 7520G ~29-30 ? 686 800 cgminer 2.11.3 –shaders 192 –intensity 9 –worksize 64 -g 1 –gpu-memclock 800 Windows 7 64-bit Temps 65-75c / Samsung NP355V5C-A05UK
ATI 7970m 290-300 ? 850 cgminer 2.11.4 Intensity=18,shaders=1280,tc=8192,lookup-gap=2 Windows 8 64-bit Temps ~85-90c

Other

Model kHash/s Watts Clock (MHz) Cores Miner Command line arguments Operating system Notes
PowerMac G5 DP 2.3 8.5 285 2300 2 ssvb’s cpuminer Gentoo Linux, 64-bit CFLAGS=”-O3 -mcpu=970 -fstrict-aliasing”
PlayStation3 FAT 80GB (FW 3.15) 38 129 3200 1 (2 Hyper) + 6 SPU ssvb’s cpuminer Gentoo Linux, 32-bit SPU code compiled with spu-elf-gcc 4.6.2
ARM 1176JZ(F)-S 0.19 ? 412 1 pooler’s cpuminer 2.2.3 Darwin 10 iPhone 3G
ARM 1176JZF-S 0.5 3.5 1000 1 pooler’s cpuminer 2.2.3 Raspbian Raspberry Pi (Model B)
ARM Cortex-A8 0.62 ? 800 1 pooler’s cpuminer 2.2.3 Ubuntu 10.10 CFLAGS=”-O3 -mfpu=neon”
ARM Cortex-A8 (L2=512KiB) 0.99 ? 1000 1 pooler’s cpuminer 2.2.3 Android 2.2 Samsung GT-P1000 – CFLAGS=”-O3 -mfpu=neon”
ARM Cortex-A9 2.39 ? 1200 2 pooler’s cpuminer 2.2.3 Debian 7 armhf Samsung Galaxy S II – CFLAGS=”-O3 -mfpu=neon”
ARM Cortex-A9 (L2=1MiB) 2.78 ? 1000 4 pooler’s cpuminer 2.2.3 –benchmark Linaro Ubuntu LIB-12.09.6A Freescale i.MX6 Quad on Sabre-Lite Board, CFLAGS=”-O2″
ARM Cortex-A9 (L2=1MiB) 3.52 ? 1000 4 pooler’s cpuminer 2.2.3 –benchmark Linaro Ubuntu LIB-12.09.6A Freescale i.MX6 Quad on Sabre-Lite Board, CFLAGS=”-O3 -mfpu=neon”, hot chip t>70C
ARM Cortex-A9 4.72 6 1400 4 pooler’s cpuminer 2.2.3 Gentoo armhf ODROID-X (undervolted) – CFLAGS=”-O3 -mfpu=neon”
ARM Cortex-A9 2.98 6 1500 2 pooler’s cpuminer 2.2.3 QNX BB10 10.1 Dev Alpha C – CFLAGS=”-O3 -mpfu=neon”
ARM Cortex-A15 3.81 ? 1700 2 pooler’s cpuminer 2.2.3 Gentoo armhf Samsung Chromebook XE303C12 – CFLAGS=”-O3 -mfpu=neon”
ARM Cortex-A15 4.09 15 1700 2 pooler’s cpuminer 2.2.3 ChrUbuntu 12.04 Samsung Chromebook XE303C12 – CFLAGS=”-O3 -mfpu=neon-vfpv4″
Qualcomm Krait 4.03 ? 1500 2 pooler’s cpuminer 2.2.3 Android 4.0.3 HTC One X – CFLAGS=”-O3 -mfpu=neon”
Qualcomm Krait 3.98 6 1500 2 pooler’s cpuminer 2.2.3 QNX BB10 10.0.9 Verizon Z10 – CFLAGS=”-O3 -mfpu=neon”
Qualcomm Krait APQ8064 7.2 ? 1500 4 pooler’s cpuminer 2.2.3 Android 4.1.2 Xiaomi Mi2, Neon, proof :http://i.imgur.com/GGFqCI0.png
Sun UltraSPARC-II 0.17 ? 450 1 pooler’s cpuminer 2.2.2 Solaris 10 CFLAGS=”-m64 -mcpu=v9 -xO5″
Fujitsu SPARC64-VII 8.96 ? 2400 4 (8 SMT) pooler’s cpuminer 2.1.4 Solaris 10 CFLAGS=”-m64 -mcpu=v9 -xO5″
Oracle UltraSPARC T2 2.48 123 1415 8 (64 SMT) pooler’s cpuminer 2.1.4 Solaris 10 CFLAGS=”-m64 -mcpu=v9 -xO5″
Oracle UltraSPARC T4 11.87 ? 2850 8 (64 SMT) pooler’s cpuminer 2.2.3 Solaris 11 CFLAGS=”-xtarget=t4 -m64 -xO5″
IBM Power 7 2.05 ? 3100 8 pooler’s cpuminer 2.2.0 AIX 6.1 CFLAGS=”-maix64 -O3″; 2.05 kHash/s measured with 1 CPU core
Amazon High-CPU Extra Large Instance 38 ? ? 8 pooler’s cpuminer 2.2.3 Ubuntu 12.04.1 CFLAGS=”-O3″
Google Cloud Platform n1-highcpu-8 38 ? 2600 8 pooler’s cpuminer 2.2.3 Debian Linux 7.0 CFLAGS=”-O3″

————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————–   Screen Shot 2013-10-28 at 6.57.32 AM

USB ASICMINER SETUP HOW TO SETUP USB ASICMINER BLOCK ERUPTER

  USB AsicMiner Setup on Windows 7 or Windows 8 Here are the basic guidelines for an USB AsicMIner Block Erupter Setup for Windows 7/8. You should be hashing for BitCoins very soon following this setup. I have tested this setup myself following guidelines over at bitcointalk forums and through web research. I have purchased several these devices through the group buy options for the purpose of bitcoin mining for the experience. I also purchased and tested USB AsicMiner Block Erupters for resale through various online merchants. Following this installation guide I was able to get my USB Block Erupters running under Windows 8. This also works for Windows 7. The screenshots below are from my Windows 8 operating system thus your gui may appear slightly different when BitCoin Mining.  Here’s is how I am Bitcoin Mining on Windows 8, using CGMiner 3.1.1. Step 1: Download and install CGMiner 3.1.1/ The windows binary can be downloaded from: http://ck.kolivas.org/apps/cgminer/. Step 2: Download and install this driver the USB to UART Bridge VCP Drivers These drivers may be downloaded from:http://www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspx Once downloaded and installed, this driver will allow you to “view” your USB ASicMiner Block Erupters from Control Panel\Hardware and Sound\Devices and PrintersUSB AsicMiner Block Erupter Driver USB AsicMiner Block Erupter Driver STEP 3: In order to start bitcoin mining plug in the USB AsicMiner Block Erupter. These miners require a powered USB port/hub. If you intend to setup more than one USB Erupter, please keep in mind, the power consumption. These devices consume nearly 560 milliamps. Most likely a powered USB hub will need to be used. STEP 4: Make note of the COM Numbers for each USB AsicMiner Device. – Navigate to Control Panel – Click on Printers and Devices – You should be able to see USB devices similar to what is listed below: USB ASICMiner Erupters appear in the Windows 8 Device Manager (ex:) USB AsicMiner Block Device Manager Settings USB AsicMiner Device Manager Settings Silicon Labs CP210x USB to UARTBridge (COM3) Silicon Labs CP210x USB to UARTBridge (COM4) More will appear depending on the amount of USB bitcoin mining devices you are attempting to use. STEP 5: Create a Desktop Shortcut. Refer to the directory that contains your cgminer 3.1.1 install, create a shortcut with a target command line that looks like this example: C:\cgminer\cgminer-nogpu.exe -o [pool]:[port] -u [username].[worker] -p [password] –icarus-options 115200:1:1 –icarus-timing 3.0=100 -S //./COM3 -S //./COM4 The above line does not copy paste correctly. There is actually two hyphens prefixed before each of the icarus settings. For example:  – -icarus-options 115200:1:1 and – -icarus-timing 3.0=100 but no spaces between each set of hyphens. My friend and I were troubleshooting his new bitcoin mining toy, and after nearly a hour we realized our copy/paste all showed one hyphen instead of two.

C:\cgminer\cgminer-nogpu.exe -o [pool]:[port] -u [username].[worker] -p [password] – -icarus-options 115200:1:1 – -icarus-timing 3.0=100 -S //./COM3 -S //./COM4

You will need to add –S //./COM(x) depending the amount of devices for your particular bitcoin mining setup. Please note the pool, port, username, worker and password are your private credentials you create depending on your selected bitcoin mining pool. STEP 6: Launch CGMiner. USB AsicMiner Block Erupter BitCoin Mining Example USB AsicMiner Block Erupter Mining Example Now launch CGMiner from the shortcut you created. If everything goes as planned you should now be mining bitcoins! Source: BitcoinBTC ——————————————————————————————————————————————————————————————————————————————————————————————————————-           With the price of bitcoins skyrocketing, mining is suddenly big business, so enticingly big that one wannabe miner was willing to pay a 1,333 percent premium to get his (or her) foot in the door of this wildly lucrative bitcoin bonanza. Ladies and gentlemen, welcome to the bitcoin gold rush. The craziest part? This wasn’t an auction for a physical, working, ready-to-ship bitcoin mining machine from Avalon, which claims to be the first to develop turnkey, bitcoin-specific mining computers for sale. For $20,600 (bidding started at a reasonable $500), the lucky winner only received a place in line and the promise that an actual (pre-ordered) miner will be delivered sometime next month. If that sounds ridiculous, well, it’s because it quite possibly is. But clearly there are bitcoin-savvy folks betting that paying 13 times the price of a machine will actually pay off. How did we arrive at this maniacal juncture? Was it greed? Stupidity? Or simple mathematics? For the full story, we’ll have to start from the top. How bitcoin mining works In order to keep a record of everything, bitcoin has a ledger known as the “block chain,” a shared database of all successful transactions. Every transaction that occurs must be broadcast to the bitcoin network and everyone connected to the bitcoin network has a copy of the block chain. 

Click to enlarge: How bitcoin works, by Joshua J. Romero, Brandon Palacio & Karlssonwilker Inc.

The purpose of bitcoin miners is to verify these transactions and then add groups of transactions, called blocks, to the block chain. This process occurs roughly every 10 minutes. For every block added, the successful miner receives a certain amount of bitcoins for his troubles, plus transaction fees. The reward started out at 50 bitcoins, but it’s cut in half every 4 years. Right now, you get get 25 bitcoins for every block mined. Anyone can technically become a miner. The software is ready to download, all you have to do is contribute raw computing power, which means your main recurring costs are electricity bills. If you solve the next block, the spoils are yours. The more processing power at your disposal, the greater your mining ability. But here’s the kicker. Built into the model is a “difficulty” metric, which is recalculated whenever 2016 blocks are added. As the speed of mining goes up (as more processing power is added to the system), the difficulty will increase proportionately to compensate in order to maintain the rate of one block every 10 minutes. 

Mining difficulty increases at a predictable rate, via bitcoinX

What this means is that your ability to mine bitcoins isn’t necessarily about absolute computing power, but rather your computing power relative to other mines. Of course, in the end, that still means you’re going to want the most powerful hardware possible if you want to maximize your mining ability. But it also means that if you don’t keep pace, you’re going to be left behind. Which brings us to… A brief history of mining hardware Back in 2009, when Satoshi Nakamoto first birthed bitcoin, mining difficulty was relatively low, which meant that anyone could download the software and more or less start mining with only their CPU. The next logical step was the GPU, dedicated graphics chips usually reserved for gaming. A graphics card from the likes of Nvidia or ATI offered a significant boost over Intel and AMD CPUs. For about $150, you could buy an off-the-shelf graphics card and start a fairly profitable mining business in mid-2011. 

Mining profitability over time, via CoinLab

As more miners joined the party, difficulty increased, making the profit to power consumption ratio unpalatable for those used to a higher rate of return. Bitcoin’s price collapse in July of 2011 only exacerbated the situation. Even if you believed in the future of bitcoin, if you spent more on your electric bill than you made from mining, you were better off just buying bitcoins. This initiated the advent of FPGA, or field-programmable gate array, use in mining. That’s a mouthful for the technical layman, but all you really need to know is that these add-on cards, which cost in the hundreds of dollars, offered comparable mining performance to GPUs while using way less power. Better energy efficiency meant higher profit margins. Eventually, any self-respecting miner was FPGA-equipped. 

A mining rig hooked up with 41 Icarus FPGAs, via Xiangfu Liu

The endgame, however, was always going to be the ASIC, an application-specific integrated circuit–in other words, a chip designed from the ground up for the specific purpose of mining bitcoins. The result is a system that is not only incredibly powerful compared to anything else, it’s also exceedingly energy efficient. ASIC also represents the theoretical limit on the hardware capabilities of mining equipment. Sure, you could keep shrinking the die-size of the chip so that it uses even less power, but even that road eventually ends. It’s simple physics: things can only get so small. Until quantum computing arrives–if it ever does–for bitcoin miners, using ASICs is the way to go. For a while, the bitcoin ASIC was a pipe dream. Designing and manufacturing your own chip requires significant upfront investment. With bitcoin’s future still uncertain, many figured FPGAs would be the best hardware miners ever got. Then, last summer, a company called Butterfly Labs started taking pre-orders for fully functional ASIC systems for $1,299 and promised to ship in October. Another company, bASIC, started taking pre-orders soon after. As with most things bitcoin in these early days, the whole ordeal was contrasted by wild enthusiasm and lingering fear, uncertainty, and doubt. The guys from bASIC ended up running with the money (although it appears they have been attempting to give partial refunds). Meanwhile, Butterfly Labs, after numerous delays, has still yet to ship anything, although it’s generally believed that they eventually will. 

Avalon’s ASIC chips

Only one company followed through. Avalon started taking orders in September, promising delivery sometime in February. That first batch of 300 pre-orders sold out within hours. By the end of January, Avalon shipped their first two units from China just before the new year’s festivities, effectively becoming the world’s first ever company to produce an ASIC bitcoin miner. ASICminer, another major developer went online in February as well, although these units were never sold to the public (but you can buy shares in the company). A new era had begun. Where we are today Remember, the ability to mine bitcoins is based on relative computing power. As such, whoever got their hands on those first ASIC machines–which are roughly 50 times more powerful than the next best thing–would quite literally print money. That lucky man was Jeff Garzik, who was incidentally pushed to the front of the queue by Avalon for being a core bitcoin developer. It’s an open source project after all. (The other unit went to the Bitcoin Foundation.) Garzik made back the cost of the $1,299 ASIC bitcoin miner in about a week. The remaining units from batch one were delivered by the end of February. Having gained some credibility and silenced the trolls, Avalon started accepting orders for batch two, which totaled 600 units at a cost of $1,499 each. Batch two pre-orders sold out within 20 minutes. Those units are scheduled to complete shipping by the first week of April. But while miners in batch two will still do well for themselves, they’ll be doing less well than batch two over time as difficulty inevitably ramps up. Which finally brings us back to our exuberant eBayer, the one who paid over $20,000 to cut in line and join the other batch two early birds. Is the worm really worth an $18,500 premium? Only time will tell. But if the price of bitcoin continues its meteoric rise, he too, will eventually mine his money back, sooner rather than later. Under current conditions, he’ll break even in 50 days, with daily revenues of $434.12,according to BitcoinX. All things considered, not too bad. Granted, it’s impossible to know how bitcoin will perform in that time. 

The arrival of ASIC-miners, in graph form, via bitcoin.sipa.be

We do know however, that he’ll be in for some stiff competition and with it, the reality of diminishing returns as more ASIC units flood the system. Butterfly Labs–rumored to have sold over 20,000 pre-orders as of a month ago–is expected to start shipping in May or June. Still chugging along, Avalon revealed it would start taking orders for batch three in the next few days. This time around, one of the 600 Avalon miners will cost ~75 BTC (the batch three price of the systems will be calculated so that break even point will be 30 days, once the difficulty resets), which comes out to over $5000 with bitcoins trading at ~$70. If that seems pricey–it is nearly five times the price of an identical unit from batch two–it’s still only a fraction of the market value. And really, there are few other businesses whose start-up costs are designed to break even in just a month. Such is the insanity of bitcoin mania.   Source: Motherboard ================================================================================================

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USB Asic Miner Red Fury bitcoin miner 2.4~2.9 GH/s ~new and improved version~

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Source:  EyeBoot.com
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Rockminer New R-Box 100-140 Gh/s Bitcoin Miner Operational Guide (Chinese Language)

Rockminer New R-Box 100-140 Gh/s Bitcoin Miner Operational Guide (Chinese Language)

This video will teach you how to setup the Rockminer New R-Box. Everything you need to know. Language is in Chinese with English subtitles.


How to Setup Rockminer T1 800-900 Gh/s ASIC Bitcoin Miner

How to Setup Rockminer T1 800-900 Gh/s ASIC Bitcoin Miner

This video will teach you how to setup your Rockminer T1 ASIC bitcoin miner. Written Guide: …


Rockminer Rocket RK-BOX 450 - 480 GH/s Miner Raspberry Pi Setup Guide

Rockminer Rocket RK-BOX 450 – 480 GH/s Miner Raspberry Pi Setup Guide

This video will teach you how to setup the Rockminer “Rocket” RK-BOX. Raspberry Pi Software Download …


Unboxing The New R-BOX 2 from Rockminer

Unboxing The New R-BOX 2 from Rockminer

Unboxing The New R-BOX 2 from Rockminer ♛Webshop: http://www.eyeboot.com ♛Deeplink Rockminer NEW R-BOX110 – 130 GH/s: …


The new Rockminer R-BOX 100~110 ghs

The new Rockminer R-BOX 100~110 ghs

The New R-box 100~~110GH/s ☆Webshop: http://www.eyeboot.com ☆Deeplink Rockminer R3 http://www.eyeboot.com/Bitcoin-Miners… ☆eBay …





Rockminer R3 500+ GH/s ASIC Bitcoin Miner - The Antminer S3 Killer!

Rockminer R3 500+ GH/s ASIC Bitcoin Miner – The Antminer S3 Killer!

This is the Antminer S3 Killer!! It can do 500+ GH/s. Also is in-stock with immediate shipping. Buy here: …


The Rockminer   SA256 Hash Rate 32~37GH S

The Rockminer SA256 Hash Rate 32~37GH S

Webshop: http://www.eyeboot.com ☢What you are buying: 1 x Rockminer R-Box 32-40 GH/s Bitcoin ASIC Miner 1 x 12v 5A power supply (both 110 or 220v are …


How to connect a Mean Well power supply to Rockminer New R-Box 100GH Bitcoin Miner

How to connect a Mean Well power supply to Rockminer New R-Box 100GH Bitcoin Miner

This video will show you how to wire your Mean Well power supply and connect it to your Rockminer New R-box. https://www.eyeboot.com.


Bitcoin Miner R-Box 32 - Mailbag Show

Bitcoin Miner R-Box 32 – Mailbag Show

Quick look at my new Bitcoin Miner the R-Box 32. This is a small ASIC miner from mining crypto-currency. This miner will be operated by my Raspberry Pi in an …


How to setup Rockminer R3 Asic Bitcoin Miner using raspberry pi

How to setup Rockminer R3 Asic Bitcoin Miner using raspberry pi

This video will teach you how to setup the Rockminer R3 Miner. Raspberry Pi Software Download http://pan.baidu.com/s/11tnJ4 …


How to Install The Rockminer R-BOX

How to Install The Rockminer R-BOX

How to Install The Rockminer R-BOX Download the Special CGMiner for R-box: http://goo.gl/WKxbmP Download Zadig Driver: http://goo.gl/Lfuerw Were to Buy …


How to setup USB Asic Miner Blue Fury bitcoin miner 2.2~2.7 GH/s

How to setup USB Asic Miner Blue Fury bitcoin miner 2.2~2.7 GH/s

This video will teach you have to setup a Blue Fury usb miner. Download Link for Alpha drivers: …


R-Box Rockminer, asic miner Hashing 25.0281 bitcoins solo!!

R-Box Rockminer, asic miner Hashing 25.0281 bitcoins solo!!

CGMiner Setup Program For Rockminer: http://goo.gl/zAF6Bp Zadig Driver: http://goo.gl/jazrA6 ☆ Webshop: http://www.eyeboot.com ☆ Deep-link: …


Rockminer R3 BOX

Rockminer R3 BOX

The RockMiner R3-Box is the evolution of the short lived RK-Box and is definitely an improvement. 36 ASICMiner BE200 chips are distributed across 2 mining in …


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