I use the 9500GT 1gb.
Its good enough for me. Its not great but its generally good enough for daytoday use.
Here is a list of games i've played
-Farcry2 (medium high noAA)
-RedAlert3 (high noAA)
-Doom3 (ultra) (kindda old game but its not bad : )
-CoD 4, 5 and 6 (high noAA)
-PoP 2008 (high...