rHy0 - you should check out this site:
www.diy-street.com - specifically take a look at the overclocking guide. Looks like you are about to find your max CPU but once you do, you need to try and find your max overclock on your ram. I am still puzzling this out myself (working on a 4200+ x2 AM2) but I have gotten my cpu stable at 2.7 and my ram should stabilize around 384Mhz according to what I have seen so far (still working on the ram). Give that guide a shot, it is pretty comprehensive.