I got myself a new i7 920. 3841A. One that can do 4.2 GHz HT (handpicked) (UD5 @ F6 bios)

But somehow it wont on my board :S. i'm now running 3933 MHz 1.35v in bios so its 1.25v load. And my core temp is 81c max for the worst core and 77 for the best. I think this is way to high. I got a mugen 2000 cooler. The heatsink is only 43c at full load. (mesured the lowest point of the cooler. Could not get closer to the cpu.)

I used multiple tools: Hardwaremonitor, Coretemp and Real temp all the same high values. I already remounted the cooler but the contact seems to be fine.

Anyone that has some tips / things i can check ? i realy want to get 4.2 GHz at 1.4v But it seems that not possible on this board. (the other person had a Asus)

But it also could be the fact that i'm running Vista X64. I wil try Win XP 32 tonight to see if its more stable then.