I'm only getting 390sol/s on my evga 1070 sc black edition, power limit: 77%, mem: +700, clock:+150. I can't go any further without affecting the efficiency ~3.4sols/watt
I have 6 x EVGA GTX 1070 SC Blacks

They all get 450 sol/s

+100 core, +600 memory, power limit 85%
OS Windows 8.1 Embedded Industry Pro