Mine is @2.24ghz right now 100% stable, I have had it up to 2.4ghz. I am sure I could go higher if my room was cooler. Overall pretty good for a $50 CPU, but if I were you I would get the 2800+ Sempron for the larger cache. Its was a pretty easy oc on my DFI, I just uped the FSB by 3 or 4 at a time and rebooted after it entered windows, I have good RAM so I only had to bump it down to 166 I think.