9600Pro is a great card. Your processor is a lil slow so you will not get the full capabilities out of the card. 9600XT is a bit better, but not much noticeably. If you don't want to spend the extra 20 bucks the 9600Pro will work fine. Both great cards, you will not see to much of a difference between the 2, just that the XT version is a bit faster. But you prob won't see the difference since your processor is a bit slow as I've said. So it is really up to you:)