Nvidia gave graphics enthusiasts the ability to build their own Quad SLI systems with the release Wednesday of a driver for the four-way graphics system.Quad SLI is a technology that allows a PC to run four Nvidia graphics chips simultaneously, producing extremely high-quality images. But the technology is not for everyone. To see the benefits of Quad SLI, the user must have a monitor with a resolution of 2,560 by 1,600 pixels\u2014far beyond the capability of the average desktop monitor.The graphics produced by Quad SLI are stunning. A Quad SLI system demonstrated by Nvidia at the Computex exhibition in Taipei during June produced near movie-quality images.For enthusiasts that wanted this kind of graphics power, Nvidia is offering them the ability to build their own systems with the release of a Quad SLI driver. The driver can be downloaded online here.To build a Quad SLI system, users will need two Nvidia GeForce 7950 graphics cards, each packing two graphics processors and 1GB of memory, as well as a Quad SLI-compatible motherboard and power supply. A list of compatible products is available here.-Sumner Lemon, IDG News Service (Beijing Bureau)Check out our CIO News Alerts and Tech Informer pages for more updated news coverage.