Yesterday, I used 'extreme' auto-tune setting on my Asus P8P67-D/i7-2600k/Kuhler 920 cooler... took the rig to 5.047ghz.
My son and I then played @ 2 hours of Battlefield:Bad Company 2 for about 2 hours. The water temp on the Kuhler was 111F. About an hour later, I was looking at some music videos on YouTube when I got a pop-window warning, stating "cpu temp 129F/55C, vCore 1.552". I backed off to 'fast' setting in 'auto-tune', which then brought cpu to 4.429ghz.
Some folks at another site said the prob was not the temps but the voltage...what do you people think?