Okay, so right now I have my Intel E4300 clocked at 2.8 GHz (311 x 9) on stock air-cooling on a ASUS P5B-Deluxe and 2x1024MB DDR2-667 Kingston, and just earlier today, my computer suddenly restarted Windows shortly after Windows started up the first time, without an error message, power-failure, or BIOS warning. So I was just wondering is this because of my CPU clock? Should I tone it down? It is totally stable and potentially unsafe? The temps seem to be fine... 31 degrees celsius min. and 53 degrees celsius max. after I run CPU Burn-in V1.101 for 15 minutes. Is there also any software I can run to stress my CPU to test it's stability? Thanks!