Test System:
Quicksilver 2002
7448 @ 2.0Ghz
Radeon 8500LE (275Mhz, 64MB)

Using parameters by Piru for benchmarking the driver:
setenv TGLSYNC 0
flushlib tinygl.library

And under Quake 3 (All details maxed out):
r_primitives 2
timedemo 1
demo four

Results:
640x480 - 130.0 FPS
800x600 - 108.6 FPS
1024x768 - 83.5 FPS
1280x1024 - 64.2 FPS