Description
The Supermicro H8DAR-T serverboard is based on the AMD-8132TM chipset. This chipset is composed of two main components: the AMD-8132 HyperTransportTM
PCI-X Tunnel and the AMD-8111TM HyperTransportTM I/O Hub. The AMD-8132 chipset provides high performance and an excellent feature-set for multi-processor server solutions. Controllers for the system memory are built directly into the
processors.
8132 HyperTransport PCI-X Tunnel
This hub 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 up to five 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 and Ethernet controllers.
8111 HyperTransport I/O Hub
The 8111 I/O hub provides the interface between the 8132 hub and various subsystems including the Winbond Super I/O functions, the onboard graphics, the IDE
controller and the USB ports.
HyperTransport Technology
HyperTransport technology is a high-speed, low latency point to point link that was designed to increase the communication speed by a factor of up to 48x between integrated circuits. This is done partly by reducing the number of buses in the chipset to reduce bottlenecks and by enabling a more efficient use of memory in
multi-processor systems. The end result is a significant increase in bandwidth within the chipset.
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