Nvidia enables Quad SLI for everyone with money
 

EACH GeForce 7950 GX2 boards still costs around $600 plus but on August the 9th Nvidia will officially release a new driver that supports a Quad SLI configuration, along with the list of verified motherboards and accompanied with an extensive do-it-yourself guide. This should allow users to complete their custom build Quad SLI systems or buy another 7950GX2 card and jump on the quad train.

Allrighty ;)