T-T-T-Tumwater
Tumwater is Intel's core logic for Nocona that has support for two CPUs, PCI Express for graphics and peripherals and DDR-II memory. It also supports Intel's new 6700PXH I/O ASIC, that bridges four of the PCI Express lanes from the MCH into a PCI-X segment bridge (two 64-bit 133MHz segments and two hot-plug PCI-X controllers).The hub link, Intel's connection between the MCH and a southbridge I/O ASIC has 2.1Gbit/sec of bandwidth (266MB/sec), for the ICH5-series controllers it supports.
The above system diagram from a Tumwater mainboard shows the basics of a powerful Nocona workstation. Two PCI Express PEG16X slots (one using 4 lanes instead of 16), the PXH I/O ASIC that bridges four lanes to the PCI-X segments, connection to ICH5 and the AGTL+ shared bus the CPUs ride.
