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H8DMU+ User’s Manual
1-3 PC
Health
Monitoring
This section describes the PC health monitoring features of the H8DMU+. The
serverboard has an onboard System Hardware Monitor chip that supports PC
health monitoring.
Onboard Voltage Monitors
The onboard voltage monitor will scan these voltages continuously: CPU cores,
Hyper Transport (1.2V), memory banks (1.8V), 1.5V, MCP55 Core, 3.3V, 12V, -
12V, 5V, VSB and battery voltage. 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.
CPU Overheat/Fan Fail LED and Control
This feature is available when the user enables the CPU overheat/Fan Fail warning
function in the BIOS. This allows the user to defi ne an overheat temperature. When
this temperature is exceeded or when a fan failure occurs, then, the Overheat/Fan
Fail warning LED is triggered.
Auto-Switching Voltage Regulator for the CPU Core
The 5-phase-switching voltage regulator for the CPU core can support up to 120A
and auto-sense voltage IDs. This will allow the regulator to run cooler and thus
make the system more stable.
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