~3000MH for one rig of 6x1070 (50% tdp, +150/+600)
I think 50% TDP is too low on the 1070 for skein. Try 66% or higher, and reduce the memclock -500
Revised numbers and more try @ different TDP With same OC
~2950MH - 50% TDP - 600W @ wall - 4.916MH/W
~3130MH - 60% TDP - 775W @ wall - 4.038MH/W
~3270MH - 70% TDP - 915W @ wall - 3.573MH/W
~3370MH - 80% TDP - 1050W @ wall - 3.209MH/W
~3430MH - 90% TDP - 1150W @ wall - 2.982MH/W
so sadly for me as usual 50% is the way to go
you should also find the best intensity
-i 24
-i 25
-i 26
-i 27
-i 28
-i 29