NVIDIA GTX TITAN vs. SLI & Crossfire @ Hardware Canucks
 

NVIDIA's GTX TITAN is the highest priced graphics cards on the market so parallels will naturally be drawn between it an dual card setups. In this article, we look at now it lines up against SLI and Crossfire setups of the GTX 680, GTX 670, HD 7970 GHz Edition and HD 7950 Boost, all of which happen to be less expensive.

http://www.hardwarecanucks.com/forum...crossfire.html