I guess it depends on what the OP wants, but coming from an e8600 at 4.5ghz on air to a q6600 at 3.6ghz has shown little to no difference in gaming, but a huge difference where more cores count obviously. AMD X4 PII's or Intel Core 2 Quad's will treat you right, both are great...when it comes down to it, if the machine is a gaming rig you don't need the best quad, you don't need the most efficient quad, you don't need the fastest quad. Really anything 2.4Ghz or better dual or quad is PLENTY for gaming, though I would prefer the 3GHz+ range for longetivity of the gaming rig. I've read reviews from both OCC and XBit Labs, both are decent sites, between reviews from there and what other members in this and other forums think help me make a purchase decision on a new product generally. Quad cores though are the future of gaming, better to have it now if you don't plan on going to a different build soon.