For starters, prices of two chips. A moderately ranged p4 and close to the highest model for AMD.
$170 Pentium 4 2.4GHz 800
$242 - Athlon XP 3000
Edge goes to P4.
OpenGL / Q3 benchmarks, 2.4 p4 barely wins in all settings over the xp 3000. Edge goes to P4.
DirectX 8 GameS: Varying winners depending on game, but very close results. Tie.
Synthetic Benchmarks: 3dmark. P4 wins in most settings by a significant amount, amd wins at one setting by a small margin. Edge to P4.
Raw data processing: mp3 maker platinum: very in favor of P4.
Archiving/WinRAR/SETI: All in favor of P4. Strong edge to P4.
Well I could go on for awhile but basically all of the edges go to the
cheaper P4. The same priced 2.8 ghz P4 simply blows away the AMD.
I get my benchmarks from
http://www.tomshardware.com, and prices from
http://www.pricewatch.com