Could you be any less specific? What card do you have now? What are the rest of your system specifications? Most importantly, what's your budget?

Well, it depends. I'm not particularly interested in seeing a PC version of Revenge of the Sith. It all depends on the gameplay style; if it has anything in common with the fantastic melee combat system that was present in the JK series, it needs to be on PC as soon as possible, but if it's just a pretty-looking button-masher, no.