Questions tagged [gpu]

"Graphics Processing Unit" - The specific component on a video card which performs active processing of images. GPUs are commonly used in Bitcoin mining as they are much more efficient at certain varieties of integer math which are a major part of the hashing process underlying Bitcoin mining.

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6answers
12k views

Why would someone rent hashing power?

I have seen some people on the bitcointalk forum looking for hashing power to rent (here is one example) and usually they pay more to rent the rig than they would earn by selling the mined coins at ...
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4answers
4k views

Now that my GPU mining rig will be made obsolete, where to turn?

With the return from GPU mining likely to be affected by ASICs, where can miners turn their machines? Should I become a pro gamer? Join a rendering farm for cash (do they exist?) and let Disney use my ...
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1answer
28k views

What is the most cost effective GPU mining rig?

I'm looking for specific part numbers for CPU, GPUs, motherboards, cases, etc. Assume power doesn't matter. Also, what sort of hash rate does it get?
7
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1answer
4k views

How fast can one generate Bitcoin addresses?

Seeing as the topic of generating address conflicts comes up every now and then, I am wondering if someone looked into the problem a bit further. Has anyone measured the speed at which Bitcoin ...
7
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1answer
560 views

What OpenCL video cards (or FPGAs) are best for multiplication?

I'm benchmarking some Bitcoin related software and am looking for cards that are better at parallel multiplication vs parallel addition. Is there any prior work that may have this information? ...
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3answers
11k views

ATI OpenCL V.S. NVidia Cuda Cores

First of all, i would like to say, i really don't want this thread to be some debate about your favorite video card manufacturer. So please just take that elsewhere. I have heard from a lot of people ...
6
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1answer
4k views

What is better for Bitcoin mining: More stream processors or faster clock?

I'm trying to understand the relationships between components in a video card and how it impacts Bitcoin mining. What aspect of a video card is used during mining? For example, I can find a Radeon ...
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4answers
33k views

Should I mine bitcoins or litecoins?

I don't pay for my own power, but I have two problems mining. I am CPU mining at 250 mhash/s because my AMD Radeon HD 7800 series graphics card will only produce 4.0 mhash/s (the other problem I'm ...
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6answers
26k views

CGMiner no output (LTC GPU mining)

Here is my run command: cgminer -o stratum+tcp://coinotron.com:3334 -u user -p pass --scrypt the only output in my terminal I get is (and only this): [2013-11-30 11:34:02] Started cgminer 3.7.2 if ...
5
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1answer
2k views

Bitcoin mining may reduce the lifespan of my video card?

I'm not using a mining-dedicated videocard, i'm using my only video card (Radeon 6850) and i'm getting around 0.11 btc/24h. My concern is about reducing the lifespan of (or even burning) my video ...
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1answer
1k views

GPU mining strategies (algorithm)

I am currently in the process of creating a fairly simple bitcoin miner for CPU and GPU (for demonstration purposes not for money earning). However I am having a little troubling understanding how ...
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4answers
3k views

When will FPGAs and ASICs 'replace' GPUs for mining?

Please explain in detail, or provide an an estimate, at least.
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1answer
1k views

How do I know when my mining GPU has been worn out?

How do I know for sure when my mining hardware (GPU in particular) has failed? How can I be certain that my card is at fault and not my software or overclock settings? Example: On my rig one of my ...
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4answers
42k views

Start cgminer only on the second card HOW?

I have two video cards. My main card is a nvidia 650ti and my second is an AMD R9 280x. My monitor is connected to the nvidia and I use it for normal things. I want to start cgminer only on my second ...
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2answers
2k views

How can I enable more GPUs in Ubuntu for poclbm?

I have an Ubuntu set up (11.10) and 2 ATI Radeon HD 6870 cards. It detects one, but not the other for some reason when I try to run poclbm. When I run lspci, it finds both cards. Any help?
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4answers
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BFGminer running on GPU on Windows 7

I can't get the BFGminer to work on my Windows 7 machine. I've followed the instructions on https://www.btcguild.com/index.php?page=support. But when ever I run bfgminer.exe I get the following ...
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3answers
12k views

Cudaminer On Mac OS X installation error: “malloc.h: No such file or directory”

I'm almost completely ready to GPU mine but I'm stuck on step #25 of Option #2 of this tutorial: http://www.reddit.com/r/dogemining/wiki/index/mac_mining_guide after running this command inside ...
3
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1answer
402 views

Is it possible to mine with both (2) GPUs in headless mode?

I've got a Mac Pro with two different GPUs in it—one is a new 5850 and the other is some old (stock) Radeon. I'm wondering if it is possible to mine with both cards simultaneously if the OS is ...
3
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1answer
2k views

Are there any Bitcoin miners that run from a web page and use the GPU? [duplicate]

Possible Duplicate: What is the status on webminers? I love Bitcoin mining so far. However, I need to do it without running a Java applet that I download {see BitMinter for an example of this} ...
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2answers
7k views

Can I mine with BFGMiner on an ATI Radeon

I have managed to connect to the pool via the command line but when I went to manage devices it says I have none. I tried to use auto and all commands to add the GPU and seemingly it will not pick it ...
3
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1answer
4k views

Underclock GPU Memory below “Recommended” Limits on Linux

I'd like to try underclocking my GPU Memory. Based on what I've read, this is frequently done to reduce heat without sacrificing hashrate, and can sometimes even boost the hashrate if done carefully. ...
3
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1answer
365 views

Is there a miner with a controllable hashrate?

Sometimes people don't want to mine at a full load due to various reasons (computer noise, hardware concerns, etc). Are there any miners out there in which one can set a hashrate limit? I know one can ...
3
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1answer
237 views

ASIC and FPGA feasibility as GPU

I've done a minor amount of research into the topic of bitcoin mining using ASICs and FPGAs, and I've started wondering: Could these be used as GPUs (possibly specialized to a subset of what modern ...
3
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2answers
937 views

Energy & performance comparison: GPU mining vs playing HD Video

Using the built-in ATI video card on my computer, I can mine at about a 30-50 MHps rate. I'm wondering, how does this amount of work compare to normal video card operation? Or how can it be calculated?...
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2answers
5k views

Is ASIC miner worth my money? [closed]

I started to mine BTC recently with my single 7970, and I'm getting 590MH speed on it. Using some BTC profit calculators that I've found on the internet tell me I could earn ~$300-400 worth of BTC ...
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5answers
3k views

GPU mining slows down my ubuntu

I'm trying to mine using my CPU and GPU. When the CPU is set to use all its cores, I have no problems, but when I use my GPU, my desktop gets way too slow because unity uses it too I think, so I need ...
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1answer
11k views

Mining Bitcoin on Linux with CUDA?

I have a Linux machine with an Nvidia GPU (GeForce GTX 760). Is there a tool, rather than writing your own, that can currently mine Bitcoin using CUDA on Linux?
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4answers
7k views

LTC mining is better than BTC mining?

I've got a notebook with these specifics: CPU: AMD Phenom X3 II N830 3.14GHz (3-Core) GPU: ATI Radeon HD 5650 1GB Mining 1 LTC is faster than mining 1 BTC? How I estimate the times for BTC and LTC? ...
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3answers
2k views

Scrypt (Litecoin) memory / performance tradeoff

For Litecoin, if memory size is increased in processing the Scrypt algorithm, for example to 384 kB instead of 128 kB (and assuming likewise an L2 cache size of 384 kB), would the typical CPU ...
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1answer
1k views

My Radeon 7570 that comes with my hp envy h8-1409 is not being detected by CGminer (Litecoins)

I'm using Windows 8.1 and CGminer 3.1.0 trying to mine litecoins What's odd about this computer is that the video card is some kind of HP OEM device, that's getting driver updates (latest August 2013)...
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1answer
3k views

Lacking OpenCL support on macbook pro [closed]

I've a macbook pro and I tried to mine, but there is a problem, I can mine only with CPU because I get the error No OpenCL-compatible GPUs detected 2013.04.11 [15:16] Lacking OpenCL support. If you ...
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2answers
539 views

Over-reporting miner?

I'm running the puddinpop rpcminer-opencl.exe that came with Guiminer. I'm running it with crazy settings -gpugrid=128 -gputhreads=256 -aggression=14 on a FirePro 2270 workstation card, and it's ...
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0answers
349 views

How to use bitcoind with CUDA-ready box?

I am not asking for mining (which is all the information I could find on the net). I am asking for the regular bitcoind daemon, looking for having a full node with a reasonable high performance per ...
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1answer
4k views

Setting up my BFGMiner with two AMD GPU's

I have two AMD Radeon 7770's in my rig. I am able to get the command prompt of BFGMiner to run fine up, to the point where I need to add my devices (GPU's). I am not sure what commands to use or where ...
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0answers
9k views

cgminer doesnt use my GPU

CentOS6 x64, build last cgminer with openCL support [ay@pandora6 log]$ sudo lshw | grep -i geforce product: G73 [GeForce 7600 GS] [ay@pandora6 log]$ uname -a Linux pandora6 2.6.32-358.2....
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2answers
9k views

What's more important GPU cores or GPU memory?

I have been on the sidelines, watching on and off, looking to attempt mining a few coins. I have also looked at just buying coins, but found that's not so easy to do with anonnimity with all the ...
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5answers
3k views

If Bitcoin mining is becoming more and more impractical, what then?

If Bitcoin mining is becoming more and more impractical, where you'll need to buy like a ButterflyLabs unit, and where even eventually a room full of these units might not be enough some day, what ...
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2answers
978 views

Could i build a mining rig with these parts?

I have researched bitcoin mining for a while, and i have decided that i want to build a dedicated miner. Since i am very low on budget, I thought that maybe i could use an old computer that i have in ...
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1answer
3k views

Normal hashrate but no accepted shares in

For the moment I'm trying to mine altcoins using an AMD HD6850. The version of cgminer is 3.7.2. The pool I'm using is prohashing.com. It's a scrypt-mining pool which mines the most profitable coins ...
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2answers
8k views

clDevicesNum returned error, no GPUs usable

I get this error with BFGMiner, when running "bfgminer -D -d?:" [2013-04-25 09:47:31] ft232r_scan: Found 093a:2510 - not a ft232r [2013-04-25 09:47:31] ft232r_scan: Found 1d6b:...
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1answer
107 views

What is the difference (or relation) between a Bitcoin “Block” and a GPU workunit called a “Block”

I'm looking at OpenCL and GPU programming and see the term "Block" used to describe a unit of work sent to a GPU. What is the relation between a Bitcoin Block and a GPU workunit called a block? If ...
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1answer
3k views

Most important spec to look for on a GPU for scrypt mining (e.g. Litecoin)

By taking a look at all the current AMD cards comparison: http://en.wikipedia.org/w/index.php?title=Comparison_of_AMD_graphics_processing_units I was wondering if GFLOPS would be the best way to ...
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1answer
6k views

only getting 52khs on Litecoin mining with a Nvidia GTX670

I want to give mining a try with the current video card i have. I know its not good for mining but its a start. I use cgminer and link it with WeMineLTC. For some reason I only get 52 KHash/s. I saw ...
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1answer
467 views

Parts of a Bitcoin Mining Rig

Original question: How important is a strong CPU and GPU for ASIC mining? I would assume that the GPU could be a cheap one because even if its high-end it probably won't help, and that the CPU should ...
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1answer
15k views

How to mine with Intel HD Graphics 4000?

I'd like to mine with my Intel HD Graphics 4000 (128SP 16C 350 MHz/1 GHz, 1.8 GB DDR3 1.6 GHz 64-bit, Integrated Graphics). I think it has support for OpenCL, as I ran benchmark ...
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1answer
396 views

Adding an additional GPU for LTC mining

I've just recently started litecoin mining on a kind of old AMD GPU. My motherboard has space for 2 additional cards. I'd like to drop in a new card specifically for litecoin mining, but... I'm not ...
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2answers
2k views

Is it possible to mine Peercoin and Litecoin simultaneously on the same machine?

Using GPU(s) for Litecoin (scrypt, Cudaminer) and a USB ASIC for Peercoin (SHA-256).
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1answer
2k views

Can one GPU mine on Mac OS X using cgminer?

I succesfully installed cgminer on my mac but every time I try to run it I get the message [2013-09-16 15:03:49] clDevicesNum returned error, no GPUs usable why is this? Is it that you cannot mine ...
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3answers
3k views

Mining computations by the numbers [duplicate]

On average, how many "computations" (GPU computations, CPU computations, CPU cycles, etc.) does it take to solve a block ("win" a mining race)? What are these computations measured in? Operations? ...
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2answers
8k views

Mining with only 1 GPU

I have a GTX Ttan and plan on getting a GTX 1060. I want to only mine with the 1060. How would I do that. Im using sgminer v5.3.1