American Megatrends X6DVA-EG - Manual (Page 17)

Chapter 1: Introduction
1-11
Introduction
damage to the CPU. The onboard chassis thermal circuitry can monitor the
overall system temperature and alert users when the chassis temperature
is too high.
CPU Overheat LED and Control
This feature is available when the user enables the CPU overheat warning
function in the BIOS. This allows the user to define an overheat tempera-
ture.
TM2/CPU VRM Overheat
When the CPU reaches 70 0 C and above (Overheat), the CPU will slow down
and the CPU voltage will drop to reduce CPU power consumption and VRM
heat dissipation.
When CPU temperature reaches 78 0 C (*Default) and above, the system will
go into the throttling state. The Overheat LED and Alarm Buzzer will be
turned on. The CPU speed will decrease. When this happens, you can go to
the Health Monitor Setting in the BIOS to reset CPU Overheat Temperature.
VRM Protection
When the CPU VRM temperature reaches the threshold preset by the user
in the BIOS, the system will go into the TM2 Mode. The CPU will slow down,
the VRM current will drop to prevent the VRM from overheat. (The settings
are: 88 0 C, *98 0 C, 108 0 C.) (*Default)
Auto-Switching Voltage Regulator for the CPU Core
The auto-switching voltage regulator for the CPU core can support up to
20A current and auto-sense voltage IDs ranging from .8375V to 1.6V. This
will allow the regulator to run cooler and thus make the system more stable.
1-5 ACPI Features
ACPI stands for Advanced Configuration and Power Interface. The ACPI
specification defines a flexible and abstract hardware interface that pro-
vides a standard way to integrate power management features throughout
a PC system, including its hardware, operating system and application soft-
ware. This enables the system to automatically turn on and off peripherals