We already explained that as alternative to AMD FASN8 platform intel prepare skulltrail platform witch uses two MCP chips from NVIDIA production for legal SLI realization .
Associates explained that skulltrail motherboard will use HyperTransport between the chipset components . Thus, the two MCP chips in this case use for connection the system bus HyperTransport. For MCP chips communication with the chipset components intel use already the system bus PCI express 2.0. Directly the northern bridge from intel production is connected with processors through the classical FSB.
It is known that in future chipsets for nehalem generation processors intel company will use its own version system bus, known under the code designation QuickPath . Then It will be possible to connect not only the processors with the north bridge, but also chipset components.