Nvidia nForce 780 SLI

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Nvidia MCP General Manager Drew Henry told us the 780i SLI SPP is an "optimized version of a chip we've used before," suggesting that it's really a relabeled nForce 680i SLI SPP.

We should note that while the 780i's memory controller is listed at DDR2-800—the fastest JEDEC-approved spec—Nvidia says its memory controller is capable of handling DIMMs running at up to 1200MHz.

Recent nForce chipsets have been quite power-hungry, and the 780i SLI falls right in line.

When we hit a 450MHz front-side bus, it became necessary to add the 780i's optional chipset fan to keep the system stable under load. But we didn't stop there. The board easily sailed up to 480MHz without the need for extra voltage or additional tweaking. It would go no further, though, and no amount of voltage fiddling or human sacrifice could coax 490MHz from the front-side bus.

As good as Nvidia's core logic chipsets have been over the past few years, the competition has moved forward, and the 780i SLI doesn't quite catch Nvidia up.