I have used intel, Mac and AMD in 3d for a long time and I can tell you to say one is faster overall than the other is just plain ignorant.
I have personal benches that show Dual 1.25 G4 out doing Dual amd 2000 (1.67Ghz) and Xeon dual 2.4Ghz in Lightwave. They are real projects too.
I can...