Why don't invest a bit more and get your hands on a Quadro 4 750 XGL?
Now, after the FX series has been released, they come in at a lower price than before, and it's almost as good as the 900 XGL.
And, best of all, you have full OpenGL support.
The question is: are you out for some serious work, or do you fancy playing all the new games?
Subdivide and conquer!
Free your mind, and your ass will follow!