I was going to get a 939 socket and processer instead, but a sudden unexpected expense came up, and technically i still have enough money for it, but that would leave me with not enough extra incase another expece comes up. So I want to upgrade to a better 478, i currently have a Intel Cleron D 2.8ghz. I want a P4, just not sure whats better, and which kind and speed. How much of a increase of performace could i get from upgrading? for cpu intensive programs anyways.