H8DCE User’s Manual 1-5 PC Health Monitoring This section describes the PC health monitoring features of the H8DCE. The serverboard has an onboard System Hardware Monitor chip that supports PC health monitoring. Onboard Voltage Monitors for two CPU cores, Hyper Transport (1.2V), two memory banks (2.5V), nVidia 2200/2050 chipset (1.5V) The onboard voltage monitor will scan these voltages continuously. 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 moni- tor. 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 3-phase-switching voltage regulator for the CPU core can support up to 80A and auto-sense voltage IDs ranging from 0.875 V to 1.6V.
This will allow the regulator to run cooler and thus make the system more stable. 1-6 Power Confi guration Settings This section describes the features of your serverboard that deal with power and power settings. Microsoft OnNow The OnNow design initiative is a comprehensive, system-wide approach to system and device power control. OnNow is a term for a PC that is always on but appears to be off and responds immediately to user or other requests. 1-10