Okay thanks. I just found my settings.
2200 mem
1340 core
950mV in bios (both mem&core)
30.6 Mh/s
~101W in HWInfo GPU Chip Power
0 Mem errors so far
And which program are you using?
Well funny thing is I was using Claymore v10.0, but someone told be about PheonixMiner 2.8c and now I get 31.1Mh/s.
I redid the settings
1750 straps
1150MHz core 875 mV
2200MHz mem 900mV
HWInfo64 GPU Power = 89W
Kill-A-Watt Meter = 171W - 50W (tested system consumption) = 121W GPU Power draw
29-30 Mh/s