14 days of folding:

2.3ghz AMD XP: 1400
Single P4 2.4: 799
3.18ghz HT1: 1104
3.18ghz HT2: 1104

(yes both have 1104 exactly.. really strange, as the clients receive different WU's to fold.. really remarkable)

The P4 @ ~3ghz spit out ~800 more points then the AMD , thanks to the HT no doubt and some good high value gromacs.

I stumbled on this great resource.. should give you an EXCELLENT idea of performance: http://www.alliancefrancophone.org/psummary.html