Ok i got my SLI setup going and scored 18k with it in 3dmark06, but at the moment, not a single game im playing has required me to turn it on. Maybe once crysis releases and supports sli i'll have to turn it on, but playing hellgate london and tabula rasa at 1920x1200 and max settings im getting 45-50 frames per second which is more than enough to be buttery smooth for an MMO.