Supermicro H8DCR-3

Supermicro H8DCR-3 ... chipset. The nVidia nForce Pro 2200 functions as a Media and Communications Processor and the AMD-8132 as a PCI-X Tunnel. Controllers for the system memory are integrated directly into the AMD Opteron processors.

The nForce Pro 2200 Media and Communications Processor is a single-chip, high-performance HyperTransport peripheral controller. The nForce Pro 2200 includes a 20-lane PCI Express interface, an AMD Opteron 16-bit Hyper Transport interface link, a four-port Serial ATA interface, a dual ATA133 bus master interface and a USB 2.0 interface. This hub connects directly to CPU#1. The two GLAN (Ethernet) controllers connect directly to the nForce Pro 2200.

The 8132 HyperTransport PCI-X Tunnel includes AMD-specific technology that provides two PCI-X bridges with each bridge supporting a 64-bit data bus as well as separate PCI-X operational modes and independent transfer rates. Each bridge supports PCI masters that include clock, request and grant signals. This hub connects to the processors and through them to system memory. It also interfaces directly with the Serial ATA controller.