If you are one of the four people in the world lucky enough to own a quad SLI rig, you'd better get over to nVidia and snag the latest Forcewares. nVidia has moved the Quad-SLI supporting drivers out of beta and now has them WHQL Certified. Version 91.45 only supports the 7950GX2 cards, and not the 7900s, so keep that in mind if you plan on upgrading. There are a few other minor improvements in the drivers, and they can be downloaded from nVidia.