I'm running:
Windows 98SE
Athlon XP2000+
ASUS A7M266 motherboard (BIOS 1.08)
512MB DDR266 RAM (CAS-2)
GeForce 3 (original) 64MB
7200rpm IBM 40 gig hard drive
512/256 ADSL
Drivers in use are:
VIA Hyperions (not sure which version number)
Detonator 28.32s
AMD AGP Miniport Driver (Latest version(1.41?))
DirectX 8.1 (DX9 slows performance if you have non DX9 aware graphics card)
I'm using the DirectX renderer for UT.
I run UT in 1280x1024x32 on a 19" monitor (refreshing at 100Hz.)
All UT graphics setting are on / max.
Minimum desired framerate is set to 50.
Netspeed is 10000.
Vsync is on.
I've yet to see my framerate drop below 70 on any AS map, even on servers with 12 peeps in.
One thing which just occurs to me is that P4 systems with bad graphics cards may perform worse than similar Athlon equivalents with the same card.
The P4 floating point unit is much slower than the Athlon's, so in non-SSE2 optimised programs (like UT), if that program makes lots of calls to the FPU, P4's may be slightly slower - which I guess they compensate for by being clocked into the stratosphere.
Other thing to bear in mind is that the early P4s using SDRAM turn in totally crap performance. If you have a P4, you should really be using DDR ram or RAMBUS.
Its a scream - even with SSE2 optimised apps, and running a full 1Ghz faster than the fastest Athlon, the P4 struggles to yield even a 10% performance increase.