What is your budget? Ok, some of the prices are out of date, but this should help you with your choice. Here is what CAD users at
Cadalyst found (higher test results are better):
3dLabs Wildcat II 5110: Best performance of any card currently available at $2000,
ATI Fire GL2, test result: 52.6 at $1200,
ELSA GLoria III, test result: 38.4 at $1200,
Oxygen GVX420, test result: 29.1 at $2500,
Oxygen GVX210, test result: 28.2 at $2000 (old price),
3dLabs Wildcat 4110, test result: 26.7 at $2200 (old price),
ELSA GLoria II, test result: 24.9 at $700 (old price),
ATI Fire GL1, test result: 23.8 at $700 (old price),
E&S Tornado 3000, test result: 19.2 at $1300 (old price),
ATI Radeon32, test result: 17.9 at $279,
Matrox G400, test result: 15.6 at $210 (old price).
GeForce3 is by far the fastest gaming card available. It isn?t the top when doing 3D rendering. A GeForce2 GTS would fit in somewhere around that Fire GL1.
Source, the only Professional/Gaming comparison I know of
Now if you say a GeForce3 is about double the speed of a GeForce2 GTS, it will reside in 3rd place on that list. Again this is a guess, but there aren?t many benchmarks of gaming cards when doing rendering. However the GeForce3 is quite a bargain at about $300.