Right, I'm sure if 3Dfx ever implements T&L it'll be a high fill-rate card as well. But they are infamous for cutting corners. Now the GeForce really shows it's strenghth on systems with lower CPU power, for example, on mine I get a huge performance increase on Quake3 over my Voodoo3. These are the potions I had to weigh, which card would benefit me more with my current setup, and the GeForce was it. Now I did get faster framerates using Glide on Unreal Tournament though, by about 5 or so, but I get better framerates with higher resolutions with the GeForce.
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System:
Celeron 366 @ 458
ABIT BE6
128 Meg. PC 100
Guillemot Prophet GeForce 32 Meg
Aureal 2 Soundboard