Chapter 4: AMI BIOS
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ACPI Settings
Use this feature to congure Advanced Conguration 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 the sleep mode.
Select S1 (CPU Stop Clock) to erase all CPU caches and stop executing instruc-
tions. Power to the CPU(s) and RAM is maintained, and RAM is refreshed. Select
Suspend 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 S1 (CPU Stop Clock), and Suspend Disabled.
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 depen-
dency on other timestamp calculation devices, such as an x86 RDTSC Instruction
embedded in the CPU. The High Precision 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)
Conguration
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.
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