I'd suggest a GeForce Ti4200....then just soft quadro it up to the 750XGL.....pretty easy to do (I have a walkthrough PDF on how to do it if you decide to go this route). The card itself is relatively cheap. I have the MSI TI4200 soft-quadro'ed up and run maya without a hitch. In all honesty I don't notice a difference in speed on the odd occasion I fire up Q3.