Hello, I have a Dell XPS 730 that came with a Nvidia 9800gt x2 SLI I would like to upgrade the card as it is failing. I bought the unit in 2008. I have ugraded to windows7 64 bit and 8GB of Ram. Can you give me a suggestion as to a replacement that will perform better at a reasonable cost. Thanks for your help. I have no particular loyalty to Nvidia meaning that an ATI graphics card that outperforms at a reasonable price is something I would look into. Thanks, Jonny