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The First Quad SLI Benchmarks
An anonymous reader writes "X-bit labs have a preview of NVIDIA's Quad SLI system based on two GeForce 7900 GX2 cards. On each GeForce 7900 GX2 is allocated 512 MB of on-board memory, which is connected through a special bridge chip with 16X PCIe lanes to the other daughter card and the system. The two GPUs on the card work in SLI mode. The core and memory are clocked lower than a single GPU card at 550 MHz and 1.2GHz (DDR). For Quad SLI, NVIDIA has introduced a new mode of SLI, AFR of SFR where each card alternately renders a frame split between the two GPUs of one card after the other. The GX2 cards are benched (when possible) at resolution of 2560 by 1600 with 32X SLI AA and compared to a Crossfire x1900 XTX system on a variety of games."
...But good luck getting anything but the demo that ships with your prepackaged pair of identical cards to run on such a setup.
Don't worry, though - The sequel to your favorite game might support such a configuration (assuming you have the right card model, the right rev of that model, the right motherboard, the right BIOS, and the right OS) somewhere around the time single-GPU cards have 8x (i.e. twice what this would yield, if you can get it to work) the power of anything available today.
Does this have serious geek-cred? Sure. Would anyone but a total masochist try to run such a configuration, for anything more than bragging rights? HELL no!