Geforce 8800 GTX 768mb- any benefit in 2 cards in SLI??

Check out this article:
http://www.legitreviews.com/article/421/1/

A driver update will certainly help, though some games are already optimised for SLI. I wish that review would have put benches of a single card up also, it is hard to draw any conclusions for what we are interested in seeing when they only compare it to other multi card setups.

Keep in mind that two 8800GTX's are going to stick the bottleneck somewhere else in the system when running at any resolution except massive ones. I see that 1920 x 1200 is the highest they run at for those benches, I think two 8800s are still being bottlenecked in most games by the CPU at that resolution. There may be some exceptions but if you want to see a real change in most games you will have to be playing at 2860 x 1600 or whichever crazy resolutions you can configure with dual monitors.