@ rusty: I know that temps are high, I'll have to find some time to reseat my Tuniq. The newest RealTemp and Everest asume a TjMax of 100, so they both show the same temps. At 3.4 GHz, running Linpack, cores reach 72°C max. (room temp. ~30°C) and the difference between cores is 2-3°C max. Is that too hot ?

I tried disabling C1E and SpeedStep, but that had no impact on stability, so I reenabled those features.