GamePC has an interesting article on-line detailing their experience testing a Quad-SLI setup. Some of the numbers look absolutely fantastic, while others will leave you scratching your head. There is no doubt that Quad-SLI is the most powerful graphics configuration currently available. But is it worth your hard-earned cash? That's the question GamePC tries to answer. If you'd like a second opinion, Dave took a Quad-SLI rig for a spin as well. His thoughts are in this article from a few weeks back.