Actually, AMD's cost more for me. I don't know why. A 2100+ costs me 174.96, and a P4 2.0 ghz 171.02, which the 2100+ is supposed to be comparable to. The P3, is 122.88. I like the faster bus speed of the P4, and almost every site I've seen that compares the two, likes the intel better. The athlon runs hotter too? And has a smaller cache and frontside bus.