Well, not all 3837B are good CPUs it seems.. at least I haven't had much luck with the 3837B282 I just slapped in my phase rig a few hours earlier. No way to even get 4,2Ghz stable, tried 1,55V Vcore - crap CPU
Also it despises the 21x mult which already disqualifies it for phase.. oddly enough it prefers the 20x, first i7 I have ever tried that actually likes even mults.

Oh well...