8800gtx died... looking to replace

I'm looking at the HD4890 or the GTX 275, according to my budget.
Rest of the system is a C2D E6750 @ 3.1 ghz IIRC. Seems like nvidia is the consensus on the better card to go with... doing some searching, but can't find much about the 4890. Any suggestions?
Rest of the system is a C2D E6750 @ 3.1 ghz IIRC. Seems like nvidia is the consensus on the better card to go with... doing some searching, but can't find much about the 4890. Any suggestions?