How does Nvidia use four GPUs to accelerate graphics in their up-coming Quad-SLI technology? This article has the answers, for the tech-heads who were wondering.

Quad SLI is largely designed for rendering at high resolutions, such as the 2560x1600 offered by Dell's 3007FWP. While any current single board might struggle to get frames drawn at that resolution, with IQ turned up, at playable framerates, four GPUs each with their own memory should manage it in almost all modern games.

Looking around the web, most decry Quad SLI as a pointless engineering exercise limited to a tiny customer base. While the customer base might indeed be small, especially if you need to buy an entire system along with the coveted GX2s, as an engineering showcase it has significant merit.