By reading the PC Games Hardware edition 02/2006, i found an interesting article about the Dual Core Procesors.
The nvidia driver, are optimized to use the dual core processors.
Yes, the grafic card driver itself can split his job on both CPU core, in order to perform faster.
I wonder if something like this can be done in the 3dfx drivers.
I go a little bit further with the following sugestion: Every job that a 3dfx card NOT support ( pixel sharder, T&L ) should be transfered directly to the CPU cores.
@SFFT: What do u think about this ?
It's possible ?

Br.
Radu.

IMHO i think is not possible.
Some features never can work in 3dfx cards, because, like pixel shaders, need to work in full software rendering...