Best video card for folding

[Bozo]

I presume that NVidea is the brand to have, but what flavor. Something cheap would be preferred.

 

[CougTek]

The best is the GeForce GTX 580, but it ain't cheap. The best values (performance versus price) are the 450GTS and 460GTX 768MB. Mark had problems with squealing 460GTX though. The squealing issue seems to have dissapeared with the GTX 560Ti, but it's not a cheap card.