meh i have my Q6600 at 3ghz atm and i haven't noticed any slow down on my games, although i suppose i haven't tried anything like Crysis and since i play Supreme Commander and Universe at War a lot, with the first one supporting quads if not the second to i guess that explains it...
So say i had the same system, 4gb ram, 4870 512mb, would i get a noticeable FPS boost if i had an E8400(lets say its at 3ghz) over a 3ghz Q6600?