Yeah, I was talking specifically about my 2500+ Barton. Ok I started off by slowly raising the FSB and RAM speed (at a 1:1 ratio of course) from 166 MHz to 200 MHz in increments of 5 MHz. At each new increment, I've gone into windows and run Prime95 for about 15 minutes for stability, and then raised the FSB up 5 more MHz. This is what sucks though, I can go up to about 190 or 195 MHz at maximum. Everytime I go to 200 MHz, Prime95 gives an error after 3 minutes. So at the 200 MHz level, I've raised VCORE and tried every setting in BIOS, from the stock 1.65V up to 1.8V. No matter what the voltage is set at, I can't get stability. Do you have any other recommendations?