IMO SLI was just a stunt to hold the attention of the public until Nvidia could get their 7800 cards out the door. The bad part is it suceeded brilliantly, not with performance, but with sales. A lot of people got hooked with the whole "2 is better than 1" thing. I used to think this was just a fad. Sadly, i now believe that SLI and Crossfire are here to stay