Intel CPUs and the G0 stepping.

[Taurothar]

I know some of you out there are the kind of overclockers I'm looking for. Does anyone know the real difference, if any, between B3 and G0 steppings of the Q6600. Should I worry about finding a G0 if I only plan on getting it stable at around 3.0, and never bothering to go much higher? Any advice on the subject would be great. Also, if anyone has some advice for which chipset to look for in a northbridge.