WOW - How hard are you guys pushing the NB? My system has been running now 24x7 100% (crunching) since I built it over a year ago. I did pull the heat sink and replace the purple junk with some ceramic, I also added two 30mm fans attached to the heat sink radiators. Since I run a liquid system, I was not getting much air circulation at the radiators by the CPU. I do push 1.425v on the NB.