Chapter 4: AMI BIOS
4-23
ACPI Settings
Use this feature to configure Advanced Configuration and Power Interface (ACPI)
power management settings for your system.
ACPI Sleep State
Use this feature to select the ACPI State when the system is in sleep mode. Select
S1 (CPU_Stop_Clock) to erase all CPU caches and stop executing instructions.
Power to the CPU(s) and RAM is maintained, but RAM is refreshed. Select Sus-
pend Disabled to use power-reduced mode. Power will only be supplied to limited
components (such as RAMs) to maintain the most critical functions of the system.
The options are Suspend Disabled and
S1 (CPU_Stop_Clock)
.
NUMA (NON-Uniform Memory Access)
This feature enables the Non-Uniform Memory Access ACPI support. The options
are
Enabled
and Disabled.
High Precision Event Timer
Select Enabled to activate the High Precision Event Timer (HPET) that produces
periodic interrupts at a much higher frequency than a Real-time Clock (RTC) does
in synchronizing multimedia streams, providing smooth playback, reducing the de-
pendency on other timestamp calculation devices, such as an x86 RDTSC Instruc-
tion embedded in the CPU. The High Performance Event Timer is used to replace
the 8254 Programmable Interval Timer. The options are
Enabled
and Disabled.
Trusted Computing (Available when a TPM device is detected
by the BIOS)
Configuration
TPM Support
Select Enabled on this item and enable the TPM jumper on the motherboard to
enable TPM support to improve data integrity and network security. The options
are
Enabled
and Disabled.
TPM State
Select Enabled to enable TPM security settings to improve data integrity and
network security. The options are Disabled and
Enabled
.
