I have eight GTX 1070 Founders Edition cards mining ETH.
Using HiveOS on 440.82 drivers I'm averaging 28.25MH/s per card.
My temps are good (~68C maximum) with the fans running at 75%.
I have 150 Core 1400 Memory and 124 (w) Power.
That's probably the best that I can do at this moment. I'm constantly tweaking and re-adjusting though. I'm open to suggestions.