i was using a 2900xt and it did everything just fine. except the power draw was so massive that a 100$ 4850 would save me 3-5$ a month on my electric and offer an ok perf jump, nothing really too noticeable, but the upgrade would only cost me about 30$ after having it for a year thanks to the savings. and im glad i got it when i did, cause since then prices have not changed a hair since. someone wake me up when 5870 is 200$