Had it running at 800 today doin everything from listen' to mp3s' and flyin MS Flight Sim 2000...so I thought I'd try for the heck of it 833 (104x8). But a couple of days ago I went to put it up to 850 from 800 and it wouldn't run for a minute. Which gets me thinking: When your overclocking, do you need to let it run a while at one speed before you bump it up to the next? I mean for like days?