running stabley at 2.7, i have a vCore of 1.52v, but as said before this differs with each chip, some OC well, some dont, some accept hearty vCores, some dont. Mine wont stabley do 2.8 no matter what voltage i throw at it, ****ty OCer, i was having instant crashes at 2.8 or games were instantly blue screening. People have been known to hit 3ghz with this chip, bleedingedge got it to 3.2 before it burnt out. No worries about running it Async with RAM either, the AMD64 can handle it unlike the previous AthlonXP.