Bounca,
Let me begin by saying that I gave up on the original Unreal with my current system.
The best "stat fps" I ever got was 13!..read on!
With UT,(same system) AMD K6 2-450, 64M PC100 RAM(just upgraded to 192M, slight improvement in performance) ATI 4MB AGP (Rage2C chipset, stat fps of +-35 in realtime play!..not kidding.)
I'm an AMD devotee, having had 2 previous,flawless! systems ...but I've seen some rather negative write-ups of the Athlon chips (hardware vs. software problems)