IBM is getting ready to introduce its X4 chipset for the upcoming quad-core Intel Xeon MP "Tigerton" processors. One of the special features of the Tigerton is its new point-to-point connection between the processors and the chipset.
The new X4 from IBM will replace the current X3 and will scale up to 32 processors across eight system boards for 128 cores in a single server system. The chipset will support up sixteen 1GB, 2GB and 4GB memory modules per system board, providing a maximum of 512GB of memory.
InfiniBand for supercomputing cluster use won't be supported but there will be dual Gigabit Ethernet ports and 10 Gigabit Ethernet as an option.