I tried 400FSB and it didn't boot, not even with 1.55 vcore (cpu was at 2400MHz), 1.5v FSB and 1.4v NB. This is really making me feel like a noob, with everyone toting 3GHz+ overclocks on these CPUs and me failing to even manage 2.66GHz... This guy is hitting 3GHz on stock voltage: 1.325v http://www.overclockers.com/forums/showthread.php?t=513496 I know it's not my memory... and it doesn't work even at 1.5v FSB. These guys are doing it without touching any voltages at all. I can't get mine to be stable at 333FSB... the board's supposed to support that stock, and the cpu is supposed to be able to go up even to 3GHz on stock voltage... but it doesn't.