i975X runs SLI now with Forceware 84.43
OC Workbench reports that NVIDIA's Forceware 84.43 drivers can enable SLI functionality on Intel's i975X platform. There are some rumors that ATI's RD580 and Uli1697 can also be "unlocked" to have SLI functionality though those boards have not yet been tested fully. The irony here is that Intel's own chipset seems to be the most flexible in terms of multi-GPU support with both SLI and Crossfire natively supported.