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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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What is the error rate when mining blocks ?

I am doing the Coursera course on Bitcoin and Crypto tech, and there is a formula defined : Goodput = Throughput * Success Rate. 'Throughput' is defined as how quickly we are finding blocks, whilst '...
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206 views

GPU Mining Speed

I am a bit new to the whole mining thing and just have a economical issue when it comes to selecting GPUs. Sorry if the title is in appropriate. Let's just say in mining Ethereum, a 1070 ti (costs $...
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153 views

How is Ethash a 'memory hard' algorithm if it utilizes peak GPU memory bandwidth?

According to the Ethash algorithm described here, the computation for each nonce requires a loop of 64 iterations, where each iteration reads a chunk of 128 bytes from a pseudo-random location in ...
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464 views

Why is Ethereum total network hashrate still increasing if there are no GPUS to buy?

The total Ethereum network hashrate is close to doubling relative to its December level. Mining difficulty is also increasing proportionally of course as the total reward per block stays the same. ...
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2answers
289 views

Mining Zcash using cluster of GPU's

I have a basic knowledge about an idea of cryptocurriencies. Recently I have read articles about Zcash. Rumours has it that it's the most profitable cryptocurrency on the scene. Me and my co-...
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1answer
870 views

The warpwallet challenge 2

here you can find a public challenge aimed to brute force a brain wallet private key, derived from 8 char long [a-zA-Z0-9] passphrase with a salt of "a@b.c". Is it possible to adapt an hashing ...
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1answer
3k views

Can High CPU Droplets from Digital Ocean be used for Bitcoin Mining? [duplicate]

Can the High CPU Droplets from Digital Ocean be used for Bitcoin Mining? Can they compete with GPUs? Digital Ocean High CPU Droplets
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2answers
3k 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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14k views

NVIDIA Tesla K80 vs M60, if electricity and capital wasn't a factor

If I have a setup where electricity and capital are unlimited, which GPU would be more efficient at mining cryptocurrency (such as Ethereum) between the NVIDIA Tesla K80 and the NVIDIA Tesla M60? I ...
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2answers
3k 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
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5answers
2k 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
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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1answer
222 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 ...
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1answer
1k views

Trying To Get More MH/s Litecoin Mining

I am relatively new to this but do have technical abilities like overclocking, etc. Here's what I'm working with: AMD A6 3620 APU w/Rade Radeon HD 6530D Driver: AMD Catalyst 15.7.1 Win 7 64 ...
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1answer
3k views

What miner can I use to mine litecoin with the scrypt hash function?

When I run cgminer for run it to mine ltc the parameter --scrypt, cgminer says that is not recognized option. So, cgminer does not work. What miner can I use to mine litecoin with the scrypt hash ...
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130 views

GUIMiner not utilizing 2nd GPU

I've just setup GUIMiner, I have two graphics cards, and they are both running. However, one is getting ~400 Mhash/s, the other is getting ~10 Mhash/s. The monitoring of the GPU's also shows one ...
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168 views

GPU VanityGen with AES Encryption?

I'm getting back into Bitcoin and have started pooling savings together into a wallet. I'm moving on to cold storage and need to order some metal cards to keep safe somewhere. I need to generate an ...
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306 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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132 views

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
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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1answer
94 views

does OpenCL on Nvida work as well as OCL on ATI?

in most cases I've seen mining techniques listed as either ATI with OpenCL or Nvidia with Cuda. but I have seen Nvidia graphics that claim to support OpenCL. is this implementation different or would ...
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1answer
6k 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 1: ...
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2answers
4k 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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2answers
3k 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 stratum+tcp://stratum2.dogechain....
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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 ...
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2answers
6k 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%), xx....
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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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2answers
751 views

How long to earn fractions of bitcoin [duplicate]

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 ...
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1answer
9k 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
195 views

what is the best mining intenisty to use for certain grahpichs cards?

I use cgminer and I have a zotac nvidia geforce gtx 680 graphics card, what is the best intensity to use.
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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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935 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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362 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
456 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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861 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
13k 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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4answers
43k 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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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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1answer
392 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
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
9k views

Can i mine with a GTX 760? [duplicate]

Well, bit coin mining is looking more and more promising and to be honest, i don't know a lot. I heard you get a lot from AMD cards, but if i use my Nvidia card will it even be worth it? Thanks in ...
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1answer
911 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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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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1answer
1k 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 ...
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4answers
40k 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
4k 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
3k 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 ...
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2answers
6k 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 ...
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2answers
1k views

Using ATI and Nvidia Cards together

I want to mine Litecoin on an ATI 7950 while being able to play on my GTX 680. Is this possible ? If yes then how ?
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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 ...