That capability is currently unique in the Pentium 4 chipset world, in part because NVIDIA holds the reins of the SLI bandwagon, and--for perfectly valid technical reasons, mind you--the company hasn't allowed its multi-GPU mode to operate on competing chipsets, even though SLI depends almost entirely on PCI Express in order to work.
Armed with the SLI bludgeon and a quiver bulging with marketing names like ActiveArmor, MediaShield, DASP, and QuickSync, NVIDIA has decided to cross over from the AMD market into the foreign, and much larger, territory of Intel-compatible chipsets. The nForce4 has not been without its growing pains, but it still dominates the enthusiast motherboard scene for the Athlon 64. Is the nForce4 SLI Intel Edition good enough to stand toe to toe with Intel's 925XE? We're about to find out.