for the benchmarker like me.. i love sli and crossfire... lol, i do think its a waste of money though... but when i single card can't handle a game.... obviously a dual should...
and sli isnt a complete waste of money... if you have 1 7900gs... great card.. in the future it starts dying, you could just slap in a 2nd one and it'll fix your problems
Intel 3770k @ 4.4 GHZ | Galaxy GTX 770 SLi | 16 GB G.Skill Sniper | ASrock z77 Extreme4
2xSamung 840pro 128GB in Raid | 2x1TB Seagate | Antec 750 Watt GamerSeries
Intel Core i3 3220 | Galaxy GTX 650 | 8 GB Corsair Vengeance | ASrock B75M | Samsung 840 120GB