"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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Is it possible to identify exact GPU type using miner's log file?

In the miners (sgminer) log file I have the following lines: [21:14:19] ADL index 0, id -546853344 - BIOS partno.: 113-C3865001-T04, version: 015.041.000.000.000000, date: 11/25/13 02:47 [21:14:19] ...
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1answer
41 views

GUIMiner - Don't seem to recognize my GPU. Where to set it up?

Please don't be rude, I'm not looking for making a living on bitcoin mining, I'm just expermienting with it a bit. At least I would like to, but I can not use properly the GUIMiner. I reckon that I ...
3
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0answers
61 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 ...
7
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2answers
273 views

Why can't they use super computers to mine all the bitcoins?

I have very limited knowledge of bitcoin, but, I hope you don't mind my asking this question: As I understand it, "mining bitcoin" requires "significant" computational prowess. A lot of dedicated ...
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0answers
20 views

GPU not recognised on CorsAir cables, works normal on original

I have Chieftec Navitas 1000W PSU that has only 2 common GPU outputs http://www.chieftec.eu/en/psus/navitas-serie/gpm-1000c.html I want to connect additional GPUs via molex but with PSU I got only 1 ...
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1answer
135 views

Two GPU's But Only One Will Mine In cgminer

I have a rig with two GPU's set up in it. Both are ASUS and one is a R9 280x and the other is a HD 7790. Both appear when I run the command: sudo aticonfig --lsa GPU 0: This is the HD 7790 GPU ...
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2answers
197 views

Difference in hashrate between two GPUs

I am a gamer who simply uses his rig to mine when idle. A year ago I was getting 0.5 Ghs using a Radeon HD7970 3072MB 384bit OC Boost, then due to a technical issue I stopped mining for a few months ...
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0answers
127 views

VPS server mine LTC: can Cairo graphics perhaps replace a GPU using a TcL script?

My name is Ben and I'm working with a server technician called Fab. We are using Team-viewer to work together on this question to make it as concise and to the point as possible. We have set up a ...
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2answers
123 views

6x gpu mining rig only installs drivers for 5

built the following rig: 5x SAPPHIRE TRI-X R9 280X 3GB GDDR5 OC (UEFI) 1x AeroCool Templarius Imperator 1150W 80 Plus Gold 1x HighPower Tech 1200w Gold Plus (HP-1200-G14C-GOLD) 1x Asrock H61 Pro ...
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0answers
107 views

oclvanitygen bulk generate

If I search for say "1Random*" with oclvanitygen, my GTX 570 gets about 25MKey/s. I assume that it is actually generating 25 million keys per second, running them through ECDSA and the hashes, and ...
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3answers
232 views

5gpu 2psu scrypt mining rig shuts down 1hour later [closed]

I built the following rig: 5x SAPPHIRE TRI-X R9 280X 3GB GDDR5 OC (UEFI) 1x AeroCool Templarius Imperator 1150W 80 Plus Gold 1x HighPower Tech 1200w Gold Plus (HP-1200-G14C-GOLD) 1x Gigabyte ...
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2answers
184 views

“Can't detect any devices”

I'm trying to start mining using my GPU (ATI Radeon HD 4850) but when I try to run cgminer it cant detect any devices. I use this to run cgminer: cgminer --scrypt -o ...
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1answer
61 views

Please help, stuck at static 24Mhash/s? [duplicate]

I'm fairly new to mining bitcoin, but I have read that using GPU can help improve performance. I currently am using GUIMiner (latest version) running on an OpenCL back-end but when I choose to use my ...
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2answers
4k views

Mining bitcoin using cudaminer?

I have started mining using an nvidia gtx 670m GPU. I have compiled cudaminer and started mining on the slush pool. However, during mining I always get results similar to: accepted: 0/X (0.00%), ...
2
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3answers
769 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 ...
0
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1answer
302 views

Mining: Memory clock speed theory

I am mining on Radeon HD 7850 2G I increased GPU clock speed to max 1050 available in AMD overdrive. and then I started to increase memory clock speed. Mining performance is dropping when memory ...
3
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5answers
791 views

Why can't we design a bitcoin that does useful work?

The bitcoin network, including every miner, is the biggest computing project that humanity has created. Thus I ask: why, instead of using it to generate useless data, don't we use it to generate ...
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0answers
250 views

Can't enable Opencl for Guiminer

I'm trying to set-up an opencl device on my computer to run the guiminer but can't get it to work. I've posted questions on bitcoin and other software forums but no one knows the answer. The computer ...
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2answers
178 views

How long to earn fractions of bitcoin

I started mining today, and I'm using the bitcoin GUI miner, along with rpc2013-cuda. I'm running algorithms on the CPU(completely maxed out - It's a core i7 quad-core/Hyperthreaded at 2.3GHz) and the ...
0
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1answer
666 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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1answer
2k views

Setting up BFGMiner with GPU's

I've got two AMD Radeon 7770's in my rig. I'm able to get the command prompt of BFGMiner to run fine up until I have to add my devices (GPU's). I'm not sure what commands to use or where I can find ...
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0answers
567 views

16x Presence Short (1x Riser)

I have an MSI Z77a-GD65 and I need to short one of the slots to get it to work. The MB was working fine with 5 GPUs until a couple of weeks ago when one of the slots stopped working. I know it's the ...
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3answers
3k views

Is one quad GPU rig better than two dual GPU rigs for Scrypt mining?

I want to buy four r9 280x cards for Scrypt mining. I already have all other hardware components to create two dual rigs. Would one mining rig that uses all four GPUs instead be significantly better? ...
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237 views

Can I connect 2 different PSU's to 1 GPU?

I have 2 PSU's 850W and 750W 1 motherboard and 4 cards 280x GPU's. I would like to connect 2 of the GPU's to a second PSU. So it means 2 cards are powered by PSU A. and 2 by PSU A via the motherboard ...
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1answer
213 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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0answers
436 views

Using bfgminer on an Intel GPU on Ubuntu 12.04

I am currently running Ubuntu 12.04 LTS on an i5 core and Ivy Bridge GPU. Using bfgminer I have successfully mined on my CPU, but my GPU is never recognized. I have installed OpenCl for Intel ...
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1answer
6k 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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3answers
10k views

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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1answer
315 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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1answer
318 views

Simple GPU C++ mining

I'm trying to mine a genesis block for an experimental Peercoin clone. I've already written one using boost threads, and it's been really fun since this is the most processor intensive program I've ...
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1answer
840 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 ...
2
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1answer
514 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 ...
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4answers
12k 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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1answer
888 views

Is there a way to mine with many graphics cards without having a pc for each one (or two)

I have a serious stash of radeon cards, some great some fairly crap, I figure with them all running it all adds up. Problem is, running a pc for each card will get HECKA expensive, so is there any ...
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1answer
526 views

No Miner can connect to RPC Server

I'm new to this BitCoin, as in read about it yesterday started with it today. This technology has intrigued me to the level I cannot explain, its truly genius! Back to my problem, I have a NVIDIA ...
2
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0answers
1k views

GUIMiner not detecting my GPU (AMD Radeon HD 7600M Series)?

GUIMiner does not appear to be detecting my GPU. Under available devices, I am only able to see my CPU. I have an AMD Radeon 7670M GPU, that I have the most updated driver for and can confirm that it ...
4
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4answers
27k 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
3k views

Segfault when attempting to run cgminer on ubuntu 10.04

I recently wanted to try mining some crypto-currency, and litecoin seemed to be a good way to start since it doesn't require too specific hardware. However, running cgminer after install (which was ...
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1answer
2k views

GPU support on cgminer and bfgminer

I just read this answer which states that GPU mining support was removed from cgminer as of version 3.7.2. Does anybody know what version of bfgminer needs to be used to support GPU mining. I am ...
0
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2answers
7k views

GPU mining with Intel HD Graphics 4000

I am running Mac OS X 10.7 on a MBP and OS X 10.8 on a Mac Mini. The Mini has a Intel HD Graphics 4000 GPU and the MBP has a 3000. I know that I cannot mine with the MBP as the GPU does not support ...
4
votes
5answers
22k 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 ...
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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).
2
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2answers
4k 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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1answer
463 views

Which crypto-currencies can be mined effectively with GPU

We often hear both CPU and GPU mining are dead. There is a number of new currencies designed specifically for CPU or GPU mining. Which are these? Can you mine them effectively with GPU?
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3answers
23k views

Litecoin - Is better use a good CPU or good GPU?

I heard in some forums that mining Litecoin is better using a good CPU (Processor), different from Bitcoin that's better mine using a good GPU (Videoboard). I want know, this is true? For ...
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0answers
139 views

How has mining evolved since the start of Bitcoin?

Can someone post a detailed description on how mining has evolved since the introduction of Bitcoin all the way till today? I mean quantity of miners, hardware used, profits made, ROI etc. I guess ...
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4answers
33k views

What should I choose - GPU Mining or CPU Mining? [duplicate]

I have a HP Pavilion G6-2313AX Laptop with Processor : APU Quad Core A10 and Graphics : 512 MB AMD Radeon HD 7660G (Integrated) and 2 GB ATI Mobility Radeon 7670M HD Graphics (Dedicated) I know ...
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2answers
1k views

Why is a GPU a better tool for bitcoin mining than a CPU and is an FPGA better than both?

I was looking into the best tools for bitcoin mining and found out that GPUs are a better tool for bitcoin mining than CPU's. What is the reason for this? furthermore, I found dedicated chips that ...
0
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2answers
165 views

Why are the results of the Coinish Bitcoin calculate so grim?

I am currently investing into a new gaming PC with a Radeon HD 7990. According to objective reviews (e.g. ExtremeTech Review) this card outperforms many the competitors on the market, especially when ...
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2k views

Cgminer Windows 7(x64) Nvidia - Libusb init: error 99

I am trying to run cgminer on my Windows 7 x64 PC, with an Nvidia Geforce GTX 590 GPU. (Yes I know the hashrate is not good on Nvidia GPU's). Whenever I start cgminer, even the cgminer -n ...