I dunno. I'm just making this stuff up as I go along. But we have tested Quad SLI in order to see what it's like to play games on a quad-GPU system. We've also popped open the metaphorical hood on Quad SLI to see how it works. Along the way, we found a few unexpected things, as well.

[NLN=Quad SLI under the microscope]http://techreport.com/reviews/2006q4/quad-sli/index.x?pg=1[/NLN]