Forget the dual-system, lol, it's uneccesary. Basically a P4 is all about memory bandwidth, so to get the most out of one you need some very high-rated RAM and a top motherboard, expensive items even without the cost of the CPU. Whereas AMD is all about muscle, and added to that i persoanlly feel the fun factor in overclocking an AMD FAR outweighs the fun of overclocking an Intel. Where is the joy in overclocking an Intel chip when it has no multiplier to play around with? AMD systems are far more tweakable and though they have SLIGHTLY less performance than their Intel counterparts, the difference is really only noticeable in encoding etc, whereas in games the AMD's more than hold their own, for a far cheaper price.
P4 if you want straight-laced no-thrills performance, AMD if you're an enthusiast! 😀:beer: