I strongly suggest you look else where for an asic solution if the earliest is august delivery. I'm still happily mining away with my 7970, and at current prices it's producing $5 profit a day on top of all the coin it has produced since August 2012. It's been a great investment so far and plays all the latest games to. Good luck again.
At $265 per Bitcoin your only making $5 per day? I think your calculations are a bit off. |
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If the GPU temp is 57.5C, there's no need for further cooling. 0% fan speed makes sense.
However, I'm guessing you weren't actually mining when you copied that text.
Uh, I don't think a GPU should ever have 0% fan speed. Is the fan actually turned off? |
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Looks like chrome has 2.11.4 listed as malicious? I got a warning after I downloaded it.
Never heard that one before. |
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No two cards are identical. All cards have their own optimizations and those do change over time as well.
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I got my first mining rig setup recently and have a few questions for the experts. I am running two Sapphire 7950s. They come OC from the factory at 925 MHz. and dish out a decent hash rate of near 500. I am using MSI Afterburner and have been playing around with overclocking. At the factory settings GPU1 runs at about 80C and GPU2 70C. It appears that the exhaust from GPU2 (the bottom card) is heating up the card on top (GPU1). Question one, how does overclocking come into play other than the clock speed of the GPU? Do I need to do anything with the GPU memory clock? Question two, what recommendations do you guys have for bringing down the temp of GPU1? Right now I'm just using a box fan with less than stellar results. Link to a pic of my rig is below. Thanks for the help! https://docs.google.com/file/d/0B_suVvn6l4j2YU0wOEx2NlVNTlk/edit?usp=sharingUse CGMiner and let it manage your engine and memory clocks and your temps. Are there any guides already on the forum to go about doing this? I've played with CGMiner a little, but nothing advanced. Sure, the top post of the CGMiner thread and the readme's that come with the software. It is full of settings in the executive summaries. Then it is trial and error to get the best settings for your individual cards. |
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I got my first mining rig setup recently and have a few questions for the experts. I am running two Sapphire 7950s. They come OC from the factory at 925 MHz. and dish out a decent hash rate of near 500. I am using MSI Afterburner and have been playing around with overclocking. At the factory settings GPU1 runs at about 80C and GPU2 70C. It appears that the exhaust from GPU2 (the bottom card) is heating up the card on top (GPU1). Question one, how does overclocking come into play other than the clock speed of the GPU? Do I need to do anything with the GPU memory clock? Question two, what recommendations do you guys have for bringing down the temp of GPU1? Right now I'm just using a box fan with less than stellar results. Link to a pic of my rig is below. Thanks for the help! https://docs.google.com/file/d/0B_suVvn6l4j2YU0wOEx2NlVNTlk/edit?usp=sharingUse CGMiner and let it manage your engine and memory clocks and your temps. |
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Having a single entity with blind control over even 25% of the network blocks is a threat that devalues everyone's bitcoins
Darn the devalueing of my bitcoins they are only worth $143. What will I do? |
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One way to easily mitigate this would be for someone to release some sort of generically configured Bitcoin Mining Pool application or packaged archive that is easy to install and get running to help grow the mining pool community.  Even with your mitigation efforts, the true problem lies in the fact that there are only a few large mining pools. The more other mining pools that spring up the better for the decentralization of the overall Bitcoin network. The last thing the Bitcoin needs to do is start subsidizing Pool startups. Pools should only be done by folks who are interested starting real business and who understand both the risks as well as the benefits. Each new pool needs to earn their own income and respect in the community by their own hard work and investment. That is why we can have a pool approaching 50% and not really worry about it too much, because BTCGuild has proven itself to be trustworthy. Sam |
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Run your own GPU/FPGA/ASIC miner with the worker credentials you gave earlier, and connect it to following URL: http://api.bitcoin.cz:8332(Main pool URL) From my pool. Yesterday it worked just perfect! Should i type full path to .exe or just cgminer.exe at start? I always start CGMiner in the current, CGMiner, directory. I've never put a thought into setting path statements for it. But it does need access to the other files in it's directory. |
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2) cgminer -o http:api.bitcoin.cz:8332 -USERNAME -p PASSWORD
Isn't Port 8332 the getwork port? I'm not familiar with your pool but that is usually the case. Verify what the Stratum port is, usually Port 3333, and try that. Sam |
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for btcguild ,I got a lot of discards.
Accepted 419, Discarded 137.
strange ....
did you tried soloming with it? isnt that better? You can't solo mine with an Avalon, unless you use pool software. Also you'll probably need more than 60Ghs/s now to make that payoff now. |
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Is the 51% danger based on hash power or mined blocks? and could a pool use it despite being comprised of many miners?
The 51% danger is based on the intent owner/controller of the hash power. Whether it's Deepbit or BTCGuild there is nothing to really worry about. That being said if it did happen and for a sustained period of time I would be uncomfortable with it as well. But when 51% has happened in the past it was for very brief periods of time AND nothing bad happened. Sam |
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According to blockchain.info, BTC Guild currently holds 49% of the total network hashing power.
This goes against everything that bitcoin is about. We are centralizing our mining power into a single mega pool. Although I have nothing against BTC Guild, this cannot continue. Miners, if you are currently mining with BTC Guild, please consider switching to another pool to help promote decentralization.
Ohh Nooooo Stop mining at Deepbit!!!!!!! |
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For some reason when I open up cgminer, I get greeted with the error message: ADL found less devices than opencl! There is possibly more than one display attached to a GPU. I'm pretty confused with this because I haven't done anything that would cause this. The only thing that I've done today is add my second GPU into my rig. I've got 2 5850's running at the moment. Anyone know why this is happening, and what I can do to stop it? Secondly, for some reason there are no temps being shown in cgminer any more. Anyone know why this is, and how I can get them back? Kind of makes it difficult to monitor  Did you try using dummy plugs? |
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Thanks os2sam for helping out while I sleep  . Been pulling really long days lately, almost afraid to close my eyes. No problem. Even a stopped clock is right twice a day |
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or CGminer stealing k/h for some backdoor pool?  Really?!?! Don't be such a Drama Queen. |
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Hi Guys,
Does anyone know any flags that might assist in keeping GPU temps down with a small sacrifice to the hash rate? Its very hot where I live during the day and I noticed regardless if I run cgminer with low aggression and low thread concurrency the temp is the same as with higher settings.
Im running 2x 7950's with no flags at the moment just the profile in guiminer
Reduce --gpu-engine limits You can also reduce your temp target. Read the executive summary in the first post for examples. What temp are your GPU's running? Mine are around 74C with a target of 75C. |
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Thanks. That did the trick!
Glad to hear it. |
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Noob question:
At a speed of ~800 MH/s should I choose the PPS or the Proportional method?
Thank you!
Proportional will have variance. PPS will not have any variance but at the cost of much higher fee. So I would use Proportional. |
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