Hi guys! I was wondering if upgrading my GPU right now is a good decision or whether I should wait a while. My current Specs: AMD Phenom II X3 720 BE ASUS M4A78T-E 1X2GB Transcend DDR3 1333 Mhz XFX 9800GT The only upgrades I would be able to afford would be the Radeon HD4870 or the nVidia GTX260. Will waiting some time (long time, infact) to buy the GTX 275 / HD 4890 be a better idea? Also, is the GTX 275 a much better performer compared to the HD4870 / HD 4890? Thanks.