i have a XP2500+/333 and a P4 3.2/800. I swear the XP2500+ is more responsive for interactive tasks. I guess it's the cache. Anyway, both are only running 512 MB PC2700 memory. I was hoping the hyperthreading might be a big deal, but so far not so much. (AMD is on Shuttle AN35NUltra, P4 is on Soyo SY-p3I865PE Plus Dragon 2 v1.0).
hmm, I guess it could also be the video card (128 MB GeForce 4 something). When it was is the AMD, the response wasn't as snappy as it is now that i replaced it with a 64 MB GeForce 2 MX). Doesn't make any sense to me. But the slower response was still not as slow as the P4.
oh yeah: AMD + MB price $150 AR (several months ago) vs. Intel + MB Price $220 AR (several days ago)