I have been using a oxygen gvx1 for a couple of years now with a p3 650ish proc.
I must say for all major 3d apps its rock solid...2d performance seems a little tired....but
After seeing dynamics played back at amazing speed on a friends p4 2000 with gaiward geforce ti500...i think its time for me to spend out on a new PC O_o.
my friend was using the standard drivers as well, not the quadro patch thingy, and all seemed to work fine.
..also on a less important point..the oxygen is utterly useless for playing games, good enough for a spot of counterstrike though 