I don't think it's really justified. By the time you actually "need" the power of 2 vid cards (as opposed to one), the next generation card prolly would be the same price you spent before on ur original cards.
So you can just ebay off your old card and get a new one when the time comes IMO. SLI just feels like a waste of $$.
It's retarded, the whole concept of it. If they really want 2 GPUs, they should integrate both on the same bloody card. Will be much more efficient than 2 different cards
Ya I agree. I think its more a fad, sales thing, then something that makes a ton of sense. It essentially splits the screen, and is very expensive to justify. Guys with 2 6800gts probably aren't much happier than a guy with one. (right now that is)