Quote Originally Posted by Shintai View Post
CSI is irrelevant for LGA1160 chips. Whatever they use CSI or a new name for the DMI to the southbridge doesnt matter. The old DMI was basicly a modified PCIe link at 2GB/sec.

Unlike A64, Nehalem desktops chips dont need a fast HT/CSI link to a PCIe northbridge host. Because the bandwidth demanding PCIe is ondie on the CPU.

The only thing left is SATA, sound, USB, network and such on the Ibexpeak. But I expect it to be a CSI link. Or a DMIv2(PCIe 2.0 (4GB/sec)) link. Since the value will also have to be able to carry the signals from the GPU for further distribution.
The A64 also needed a bit more bandwidth for communication between the IGP on the chipset and the memory controller on the CPU. This will not be necessary on the low end Nehalem CPUs as the GPU will be very close to the memory controller.
One more thing that the PCH (which is what Ibexpeak is) will probably have is a more dedicated interface with some on-board (NAND-)flash memory. This is not very bandwidth demanding, but here sure is hoping it will be