Rig:
1070, +150 core(~1875MHz effective)/-400 mem/75% tdp
with 1.7.1-alexis ~2700 MH/s
with your mod ~2770 MH/s

Single card:
Your mod with different tdp:
75%(1875MHz core) 2800MH/s
85%(1975MHz core) 2900MH/s
95%(2012MHz core) 2970MH/s
105%(2050MHz core) 3000MH/s
114%(2063MHz core) 3040MH/s

Also, desktop freezes, delay between move mouse and picture reaction is few seconds.