i upgrade to a "geforce evga 460 gtx superclocked" 1gb, i was going to get this years model 550ti but after scanning the web ratings they told me the older 460 is much better..for ATI cards i have had a few troubles, so not going there anymore for awhile..
460 Runs very well makes my last card look rubbish which i thought was stunning..all i need now is a 3d Screen as the card runs 3d as well, Connects with 2xDVI and 1 mini HDMI, with special lead included for the mini hdmi
i also run 8 gb ram, but sadly 1 stick gone down so only 6 for now, upgrade again after christmas