lol... I have my E6300 running at 3.4ghz. I do have a 25cm fan blowing on a nice heatsink, though. Don't forget that my processor is the older stepping, too. Just make sure you have sufficient cooling and that you get some DDR800 memory that can do at least CAS5 at DDR900 or so.
3.0ghz would be a pinch with that processor.
3.2ghz is more realistic.