The Dynamic Pictures (3D Labs) Oxygen 402, a old card (as old as in 1997)..
although it only have Windows NT4.0 Driver, seems it can also used in Windows 2000 environment provide OpenGL acceleration..

there was a discussion about similar card on falconfly forum:
http://www.falconfly-central.de/cgi-bin/yabb/YaBB.pl?board=offtopic;action=display;num=1104583858;start=

The GMX series is much more modern than the old oxygen 402 ..
I think the performance of these cards are quite powerful in OpenGL (even in game)

only they might be incompatible with games

i think the old titles would run just fine..
becoz i have never played Quake 3, or Unreal, or Half-Life ...
so if it can play this, it will be fine..
also i have never played with this kind of workstation card, maybe it's a good time if i can bid it successfully.