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New Sia GPU Miner for OpenCL Forked by Genoil Now Available

12, Jul 2016

sia-gpu-miner-genoil

Siacoin (SC) is getting a lot of attention lately and there is now a new fork of the miner available made by Genoil (source). The Sia GPU Miner fork by Genoil is for OpenCL, though it works on both AMD and Nvidia and provides some performance optimizations along with other interesting features such as the ability to load external OpenCL kernel file that might be useful for people that want to try modifying or optimizing the CL file. Genoil reports that his optimized OpenCL kernel is capable of providing roughly +18% performance increase on a 7950 and we are seeing some performance boost on Nvidia as well, though more like 3-4% boost on a GTX 970. Nevertheless the fork by Genoil does offer some performance improvement over the Siacoin default miner as it has taken that OpenCL Go miner kernel as a base and even more improvements could be possible for faster performance.

We have a working 64-bit Windows binary available for download below that you might want to try. We have tested it and can confirm that it works on both Sia Nanopool and Siamining pool, though for some reason the hashrate reported by the miner is a bit higher for Nanopool than for the Siamining pool. Do note that this miner does require you to run a separate instance for each GPU in your system, it will by default run only on the first video card it finds. So while things do look very promising for this fork it apparently can use a bit more work to become as easy to be used as the Siacoin Go miner and maybe even better performance wise.

– To download and try the Sia GPU Miner for OpenCL Forked by Genoil for Windows…

Updated ccMiner 1.8-dev fork by tpruvot With Faster Lyra2REv2 and Decred

5, Jul 2016

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Here is another quick update of the ccMiner fork by tpruvot with a new Windows binary we have compiled from the latest ccMiner 1.8-dev (source) that comes with improved hashrate for Lyra2REv2 thanks to the Nanashi Meiyo-Meijin improvements as well as faster Decred hashrate thanks to Alexis Provos improvements getting integrated. There are some other fixes and some new features using nvapi, this release also includes support for the X11 Evo algorithm, so you might want to give it a try if you are currently using different forks of ccMiner for different algorithms. The Windows binary is a 32-bit one compiled with CUDA 6.5 and with support for Compute 2.0 to Compute 5.2 Nvidia GPUs and will also work on the newer Pascal Nvidia GPUs even though it is not CUDA 8.0 binary. So do give it a try if you are GPU mining anything other than Ethereum on your Nvidia GPUs at the moment…

– To download the latest ccMiner version 1.8-dev by tpruvot with better hashrates for Lyra2REv2 and Decred…

Testing the Nvidia GeForce GTX 1070 Founders Edition for Crypto Mining

24, Jun 2016

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Recently we have tested the new Nvidia Pascal-based GeForce GTX 1080 Founders Edition GPU for crypto mining and it is now the time to see what the little brother in the form of GTX 1070 is also capable of. The Nvidia GeForce GTX 1070 Founders Edition is a little stripped down version of the current top model in the form of GTX 1080, but generally the two are not that different. The GPU on the GTX 1070 is a bit less powerful and the memory is regular GDDR5 instead of the GDDR5X used in the 1080. The cooling solution, the backplate, even the 8-pin power connector are the same on both and that should signal a good overclocking potential for the GTX 1070 and the significantly better price makes it the more interesting of the two for crypto mining. Do note that the TDP rating of the GTX 1070 is just 151W and the power limiter allows you for just 12% increase over the stock limit, so you get 169 Watts max without having to resort to something like BIOS modification for example in order to be able to get serious in terms of overclocking. We are going to cover the overclock for the GeForce GTX 1070 and the mining hashrate with OC in a follow up article, for now we are comparing only the performance at stock settings.

We have already discussed the not so good situation with Ethereum mining on the GTX 1080 and unfortunately things are the same with the GTX 1070. Mining Ethereum under Windows is pointless at this point as the hashrate is very low (issue with the video driver) and although this might be fixed at a later time with a driver update, for the moment the only option you have is Linux. The results under Linux are not great though the GTX 1070 apparently does perform better because of the GDDR5 memory even at lower frequencies as compared to the GDDR5X, especially when you overclock the GTX 1070. We are going to be doing some more testing for this under Linux at a later time in order to see what the new Nvidia Pascal-based GPUs are really capable of for mining crypto currencies based on the Dagger-Hashimoto algorithm like Ethereum, but for now we are focusing on the other algorithms.

geforce-gtx-1070-hashrate

The results we’ve got for other popular algorithms besides Ethereum’s Ethash are pretty interesting as you can see from our summary in the table. It is interesting to note that the GTX 1070 is a bit faster in all algorithms besides Decred than the GTX 980 Ti and it does it with a significantly lower power usage. Price wise the GTX 1070 is still a bit more expensive than GTX 980 Ti, but the power savings on the long term should more than justify the difference. With that said we should note that the GTX 980 Ti has never been one of the popular Nvidia video cards among miners due to the pretty high price that it has been keeping. Compare to GTX 970 the new GTX 1070 is significantly faster, and the results of the 1070 were not that close to the ones from GTX 1080 as we’ve hoped they could be. With some overclocking however we expect that the gap in performance between a stock GTX 1080 and the OCed GTX 1070 cloud become pretty insignificant, but that would need some more testing to confirm.

Do note that we have not included results from Lyra2RE and NeoScrypt this time, because with both algorithms the GTX 1080 and GTX 1070 did not perform well and would need some optimizations. In fact there is already an optimized version of ccMiner that fixes the performance issues with Lyra2RE that also brings quite big performance boost for older GPUs as well – ccMiner 1.7.6-r6 fork With Faster Lyra2RE, but for Neoscrypt the performance of the Pascal GPUs needs some work.


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