I had that model before.. but at 1920x1200 it was slow as hell, i played the old cs in a 800x600 window, 1024x768 lags.. i think if i gotten the 128mb one, it would be a little faster.. I since upgraded to a d800 with 1920x1600 and g2go 5600 with 128mb instead.
that did CS really well but Doom 3 at 800x600 @ 13fps