generally, no.
causes:
1. nearly
all modern games use hardware t&l...no 3dfx chip which has seen daylight actually has hardware t&l and software t&l will run toooooo slow one day...if it is evently supported by the game.
2. fillrate. voodoo5 5500 has 667 MegaPixel/s / MegaTexel/s, modern boards have up to 3 or even more GigaPixel/s / GigaTexel/s (please correct me
)...that will be toooo less one day. i know, this one's not really a necessary point for game performance, but think of high detail textures and so on..
3. in general, hardware won't support features that aren't implemented in it. so you must develop drivers which support new features by software...as most members of the 3dfx community won't be able to implement new features (like directx 9 etc.), the 3dfx boards will loose more and more compatibility in time.
<please add your points guys>
and you're right, it's also a term of hardware limitation in new (and coming) games.
sorry for that, but some day these great voodoo boards will be unnecessary.
but as we don't see that day coming and everbody here has his/her own special relationship to 3dfx, the community is still working on new drivers to let 3dfx products still be what they were meant to be:
So powerful, it's kinda ridiculous!" 8)