Win7Ult, 64bit amd_catalyst_13.11_betav9.4, NO SDK (until someone explains why I should bother installing it) Trixx 4.6.0 (CGminer will not let you undervolt) CGminer 3.7.2 Just ran 12h with 3.5.1 It was slightly worse but that could have been pool performance. Inconclusive. I will stick with 3.7.2 HWinfo64 set to 20-30sec polling while tinkering (GPU-Z lowers hashrate too much) Binary file from here: https://forum.litecoin.net/index.php/topic,6058.0.html (I found it adds 10-15 Kh/s over the self generated bin-file) ............................ https://litecointalk.org/index.php?topic=7534.150