only problem with the quad being the cooling. Overclocking the current 65 nano quads either requires some serious air cooling or water. comparatively overclocking the duals is much easier due to the lower tdp and mobo requirements. so for gaming(ie gaming right now since hardly any games are threaded for more than 2 cores, if at all) an overclocked dual core is still the best bet and will cost less. Also a 1066 Mhz FSB processor would be the better choice for overclocking obviously
edit: are u sure abt the G0 stepping for the Q6600 supra? i thought that would be comin out only later and reduce the TDP to 90W