"n88tr"...I am currently using this exact card and have been totally happy with it.
I can play Far Cry 2 and Call of Duty Modern Warfare 2 no problem. Also I have Win Vista Ultimate X64 bit installed as an O.S. and works perfect. Great card. I believe it's underrated. Doesn't have Direct X 11, but 10.1-shader model 4, which is good enough for most games, except the very latest.