It looks as if Nvidia is relying heavily on its N200 chipset to patch up current chipsets and to make them support PCI Express 2.0. It might be a strategic move, as it's cheaper to add a PCI Express controller than to make a new chipset, but it's not a good solution.

The 750i is still using the C55 SLI X8 and the MCP51 combination, but with the addition of the N200 this board will get PCI Express 2.0 added to its feature set. However, it will be limited to the same two x8 slot bandwidth as with the 650i chipset.

Boards based on the 750i chipset will also have support for up to six x1 slots or devices, 800MHz DDR2 memory and this time it will aparently support SLI memory, as well.

We're curious why all the chipset manufacturers are imposing these made-up limitations of their chipsets just so they can offer a wider range of chipsets, since why would anyone willingly want to use less bandwidth for their graphics cards than they can use?