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The NVidia 1070 Ti GPU is the newest edition to NVidia’s high end gaming graphic cards. And, as was expected, they are immediately being snapped up by buyers to use in GPU mining rigs.
The 1070 Ti is very similar to the GTX 1070, but it has 2432 CUDA cores instead of the 1070’s 1920. Since that’s about 25% more computing units, hard core ethereum miners have been estimating that the NVidia GTX 1070 ti hashrate will be about 20 to 25% better than the 1070’s.
Mining ZCash or ZenCoin on the equihash algorithm typically requires more from the core processor ont he GPU than the ram. On equihash, estimates for the 1070 Ti hashrate were similar to what the GTX 1080 can currently get, 550 sol/s to 650 sol/s.
When compared to the GTX 1080 hashrate, the 1070 Ti will likely be better, or at least competitive to the 1080 and possibly even the GTX 1080 Ti – that’s because of the memory type on this mining GPU. The 1080 comes with GDDR5X memory which has proven to be not-as-fast as GDDR5 memory when mining on the Ethash algorithm. The GTX 1070 Ti comes with GDDR5 memory so it was predicted to do 35 Mh/s or possibly even 40 MH/s on when mining Ethereum ( the GTX 1080 can be pushed to about 35 MH/s maximum, and the GTX 1080 Ti to 37 MH/s ).
Even so, if the 1070 Ti mining performance hashrate IS 40 MH/s on the Ethash algorithm, it will cost more than 2 of the oh-so-popular GTX 1060 mining GPUs that can do 23 MH/s each, and very efficiently at that.
Real World Performance when Mining GTX 1070 Ti Hashrate
So how does the GTX 1070 Ti mining performance in the real world compare to all of the estimates? Not very well.
Ethereum miners, hold onto your seats – the 1070 Ti ethereum hashrate didn’t go above 32 MH/s, even with overclocking. The EVGA GTX 1070 Ti SC hashrates for ethereum were the best of all the units we found data on so far, and that was with +200 core settings and +700 memory settings. That’s still only comparable speeds to the GTX 1070 GPU and the Ti costs more.
Equihash mining fared a little better. At stock settings, the 1070 Ti equihash mining hashrate was around 460 Sol/s using 170 or so watts. Overclocking produced varied results.
One ZenCash miner was able to tune the 1070 Ti sol/s rate to 515 sol/s using about 180 watts. That puts the efficiency around 2.81 Sol/watt. Overall the Sol/s are higher, but it is less efficient than the 3.19 Sol/watt on the 1070.
When overclocked more aggressively, and using a lowered total power draw in the 60-65% range, another miner was able to get the 1070 Ti sol/s to be 495 sol/s using only 119 watts! That puts the 1070 Ti efficiency at 4.22 Sol/watt – faster mining than a 1070, and better efficiency! Similarly, another user set his core overclock to +200, memory at +700, and TDP at 60%. They were able to get 461 Sol/s using 107 watts, which is 4.31 Sol/watt. That’s more efficient than the GTX 1070 hashrate or the 1080 Ti hashrate and efficiency!
GTX 1070 Ti Mining Review Summary: It may be too early to tell.
The GTX 1070 Ti hashrate doesn’t blow the other cards out of the water, but it does seem to show some equihash mining speed improvements over the 1070, and some efficiency improvements over the 1080. But it may be too early to come to a final conclusion.
As with other mining GPUs, as time goes on, developers create better mining software and are able to increase the performance. I expect the Ethash rate to increase by 10-15 % in the next few months as more people start tweaking and playing with them on their Ethereum GPU mining rig builds.
There are some rumors floating around on the web that the GTX 1070 Ti is basically a way for NVidia to profit off of defects in manufacturing the 1080. While the 1080 has 20 SM units, the rumor is that the 1070 Ti has 19 SM units (20 actually, but one faulty one). Slap on some GDDR5 memory with lower latency than the 1080, and you have a new card!