Nvidia nForce 570 SLI and Nvidia nForce 570 Ultra are based on a single MCP chip without any additional microchips involved. The only difference between these two solutions is that the first one allows splitting the PCI Express x16 bus into two PCI Express x8 busses, so that it can serve as a basis for mainstream SLI platforms.

Nvidia nForce 550 chipset is a cut-down version of Nvidia nForce 570 Ultra. One of its network controllers is disabled and it only supports 4 SATA II ports.