My question is could i install my old ati radeon x1300 512mb gpu into my pc along with the 8800 ultra i just got? The x1300 has passive cooling so i thing it would fit in nicely. Is there any benifit to this and is it possible? my motherboard is an asus nforce p5n-e 650i.

What Windows version is this?

Also, personally, I would recommend against it. Even people running exactly the same cards in SLi come up against problems that are sometimes un-fixable. You're suggesting mixing NVidia and ATI cards and drivers together...and on a native NVidia motherboard...hmmm....good luck

The only time I would even attempt this would be when I absolutely had to have multi monitor support over and above the existing resources available on the current single VGA card.

You must have a really good reason to go thru this?

Hi Derek,

This is completely and utterly impossible
It would be nice to be able to do it, but because your motherboard is SLI, and you have one 8800 ultra...you need another 8800 ultra to use 2 video cards.
If you had 2 ATI cards, you still wouldn't get it to work, as that requires a crossfire motherboard.

Your one video card is more than enough to do anything you can possibly imagine...and saying "i have an 8800 ultra" is a fairly big e-***** already