I've been told my 2.4ghz Intel Core 2 Quad (Q6600) & Asus P5Q-Pro are a good combo for overclocking my processor. One reliable source used this exact combo to OC his Q6600 to 3.4ghz!!!
I'm hoping to get close to 3.0ghz or at least 2.8ghz.
There are two kinds of the Q6600 apparently...