Quote Originally Posted by Tim View Post
You know what I'm thinking, what might be a crucial point in deciding between the 8800GTS and 2900XT.

PSU.

I have a Corsair 520w, good enough for 8800GTS in SLI, but I don't think it is good enough for the 2900XT in Crossfire.

Buy a 8800GTS now, if Crysis comes, I can upgrade to SLI, but if I buy the 2900XT, then I'm stuck. If performance is close to each other, I'm buying a 8800GTS.

Makes sense doesn't it? 225w for the XT is a no no, too high, single card yes, but Crossfire....phew.
You might already have an issue if you OC CPU etc too. Check how many Amps your PSU can do on the 12V rail(s).

AMD recommends a 750W PSU for a system with a single 2900XT.