amd vs. intel for avs

[times2]

i've done a couple of tests....

machine 1: athlon 1400 (non-XP), ali magik, pc2100 ddr

machine 2: p4 xeon dual 1800, i850 dual rambus pc800

machine 3: p3 dual 667, pc800 rambus

preset 1: 2 'pixelplayers', all the slowest settings (oversample, fader on ~50%). playing at 320x240. (

machine 1, 49.9fps.
machine 2, 57 fps.
machine 3, 32 fps.

preset 2: el-vis 'real 3d sentinel' (320x240)

machine 1, 25 fps.
machine 2, 32 fps.
machine 3, 21.3 fps.

this is a pretty damning result for the p4, that machine cost £4000 last week whereas the athlon cost £1400 a year ago!!

BUT when running preset 2, the p4 is running at 25% cpu use (=50% of 1 cpu) whereas the athlon is running at 75%. SO i would say a lot of the difference is down to AVS not being optimised for the p4, and therefore causing pipeline stalls etc.

can anyone else try these tests on their machines?

nb the display settings I used were MAXIMUM windowed performance, DONT wait for retrace, NO pixel doubling. And i used a 32-bit display mode for both (which is far faster for avs). There were no other programs running other than that winamp was playing an mp3.