|The P4 & it's netburst architecture sucks...always did & always will. It was probably the worst CPU Intel ever produced. The P3 was much better...the Core 2 Duo is actually based on the P3.|
Single core CPUs are all but dead. They shouldn't even be considered unless you're on a super low budget.
Just to give you an idea of how much better the Core 2 Duo is than a single core P4, here's a comparison of a C2D E4300 1.8Ghz vs a P4 540 3.2GHz.:
It's not even close.