Update on my test:Everything is good except for one small issue. I am getting 1.5% incorrect shares. But then I realized I had HWinfo open all night! This is a tripling of incorrect over v11.0 or v11.5 with oldkernels. I closed HWinfo and bumped up voltage 5 mv and will retest. But it seems perfectly stable. I set it to restart Claymore at below 62 mhs which is very aggressive and it ran all night long.
What you mean by "Disabled all power states in the video card BIOS except the top"? Can you share some picture?
http://www.overclock.net/forum/26417747-post3402.htmlSee point #2
If you click on P0 to P6 it will turn grey and be disabled. Now your card will only run in the highest power state. But beware this increases idle power consumption ten fold! Do the same for memory.
Does it actually do anything? I don't know.