That's why you bump up the fan profile - ALL recent video cards prioritise "quiet" over "cool", with the early EVGA 1070 models being a POINTED example in going way too far that direction to the point they were having some of them fail due to overheating BECAUSE the fan profile had the fans running so slow they couldn't respond to load spikes fast enough.

 1080ti tend to have better fan profiles to start with because the makers *KNOW* they are going to generate a lot more heat so they bumped the fan speeds up a lot higher to start with than on a 1070 - and if you pay attention you will note that most makers have the SAME cooling solution available on their 1070 models as on their 1080 and 1080ti solutions, except for some of the LOW END 1070 models with cooling solutions that can't handle a 1080Ti at all.


 IMO any miner that doesn't have the fans on his GPUs running at 90% or more by the time the card gets to 80C (and preferably 70-75) is DEMANDING to have their card overheat and die.



 As far as "most 1070 can do over 31Mh/s" - I call BULLSHIT on that one, NONE of mine have ever managed more than 30 no matter HOW HARD I pushed clocks, even at 180 watts much less 95.
 ETH depends WAY too much on low memory latency, and that VARIES WIDELY depending on the brand and sometimes the specific chips of the memory in a card.


 Mining ETH on a 1070 isn't a lost cause.
 It IS still very profitable, much more so since the recent ETH price runup, just LESS so than other options.

 
 NVidia-SMI is nice, but I've seen it get confused and "off" often enough that I don't trust it to be entirely correct.