I had originally installed just one card and got that one working. i did a 3DMark06 of 4406. Then i went out and baught another BFG 7800 GT installed that put the sli jumper on the computer reconizes both video cards in sli mode. Now with neither one of the cards overclocked (more than what they come with 425 Mhz) i am only getting 3888 on 3Dmark06. I uninstalled the drivers and then reinstalled them. Can someone point me in a direction?