I go with a nVidia solution. Unforrtunately your MB doesn't support SLI dual card technology, however, all current nVidia cards DO support SLI and would make a better investment. If you upgrade MB in the future to support computing requirements, you can simply add a second PCI-E SLI video card and get significantly enhanced video computing power..... ATi cards also have WAY TOO MANY driver and compatibility issues... Also, don't support SLI dual card technology.....
DCT Electronic Shifter
Bilstein and H&R sports suspension, Rogue Enginerring Race Brace
AA Stage2 tuning
Conforti CF Cold Air Intake
Hamann Front Spoiler and Side Skirts
BMW OEM rear wing spoiler.
M3 SMG Paddle Steering Wheel and M3 Seats
18" M6 custom painted wheels
Custom red kevlar interior
VIS CF Hood