im gettting the bfg 7800 gtx oc 256

That depends on other factors than just the card...
I thought the best for me was teh $549 HIS 1800XT with a 625mhz core, 512mb of 1500mhz mem, and driver enhanced features and performance optimizations like multi-threaded dual core support, which drivers are updated monthly...

Yeah, but make sure you get a good power supply.