I am debating whether it is better to upgrade my 3500+ to an X2 3800+ or should I get another GTX to go SLI? My monitors have a maximum resolution of 1600x1200 and that is what I am gaming on. I do noticed some slowness in FEAR, and COD2 demos. It might get worse in multi-player situations. The wife only allowed one item . Which should it be? See current setup in signature.