Well, didn't run any stress test, but is much better now, all my previous MSI/ASUS tests/bench's was done with an LC-Power 480W Scorpio PSU, did fine, stable 2800 in both boards, when changed to DFI had problems running 2750, was Prime stable, but random BSOD's.
Today I changed to an LC-Power 850W Arkangel the one in my Sig, i could boot 2800 255HTT/x9HT/x9NB, no random BSOD's did some benchs, all seams OK, will do some Prime later.

I know..., but I don't want to miss some fun with the 9850, and my oldest son will have some fun with 9500 too.