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H8DI3+/I+(-F) Serverboard User’s Manual
1-3 Chipset Overview
The H8DI3+/I+(-F) Serverboard serverboard is based on the AMD SR5690/SP5100
chipset. This chipset functions as a Media and Communications Processor (MCP).
Controllers for the system memory are integrated directly into AMD Opteron
processors.
AMD SR5690/SP5100 Processor
The AMD SR5690 and SP5100 are each single-chip, high-performance
HyperTransport peripheral controllers for northbridge and southbridge functions,
respectively. They both include a 46-lane PCI Express interface, an AMD Opteron
16-bit Hyper Transport interface link, a six-port Serial ATA interface, a dual-port Gb
Ethernet interface and a six-port USB 2.0 interface. The AMD SR5690 connects
directly to the CPUs.
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 effi cient use of memory
in multi-processor systems. The end result is a signifi cant increase in bandwidth
within the chipset.
1-4 PC Health Monitoring
This section describes the PC health monitoring features of the H8DI3+/I+(-F)
Serverboard. The serverboard has an onboard System Hardware Monitor chip that
supports PC health monitoring.
Onboard Voltage Monitors
The onboard voltage monitor will continuously scan crucial voltage levels. Once
a voltage becomes unstable, it will give a warning or send an error message to
the screen. Users can adjust the voltage thresholds to defi ne the sensitivity of the
voltage monitor. Real time readings of these voltage levels are all displayed in
BIOS.
Fan Status Monitor with Firmware/Software Speed Control
The PC health monitor can check the RPM status of the cooling fans. The onboard
fans are controlled by thermal management via BIOS.