Pentium 4 641+ 3.2GHz Dual-Core versus Core 2 Duo E4500

2.2Ghz Vs 3.2Ghz.

STock speeds - P4
Overclocked - C2D

Thanks a lot!
Ok...so even if C2D has less speed, it will perform better than P4 because of it's architecture?

The Core2 beats out P4 mainly because of the fact that Core2 CPUs actually have 2 cores, whereas a P4 even touted as "Dual-Core" is in fact, a single-core CPU that tricks the OS into thinking that it has 2 cores. My girlfriend's new computer that I built has a 2.8GHz Core2, and I have a P4 Dual-Core 3.2GHz (OC to 3.5GHz), and hers beats mine every step of the way. Gaming, Vista rating, everything.

Of course, you could spend an extra $50 or so and get a Core2 Quad, same idea as the P4 as it tricks the OS into thinking it has more cores, but this time it thinks it has 4 instead of 2

Disable one core on a core2, and the core2, clock for clock, is still faster. Of course, since your not doing that, the core2 will simply own.

^ He is comparing the Core 2 DUO E4500, not Core 2 Quad.