Hmm I think there's something odd, I can run up to 1.4 Vcore without much problems, after that I get downclocking. I have tried LLC medium and high, but no difference...is it the high Vcore that causes the downclocking or LLC? Or just crappy cooling? Well actually I've only got 4.4 P95 and LinX stable with my 3930K C2, so it's not that good CPU either.

AVX-Prime95 27.3 seems to be the killer on these chips, it's much easier to get LinX stability than longer perioids of P95.