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6: BIOS
ACPI Configuration
ACPI Version Features
ACPI APIC Support
APIC ACPI SCI IRQ
Headless Mode
NUMA Support
High Performance Event Timer
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Use this feature to configure Advanced Configuration and Power Interface (ACPI) power
management settings for your system.
The options are ACPI v1.0, ACPI v2.0, and ACPI v3.0. Please refer to ACPI's website for further
explanation: http://www.acpi.info/.
Select Enabled to include the ACPI APIC Table Pointer in the RSDT (Root System Description
Table) pointer list. The options are Enabled and Disabled.
When this item is set to Enabled, APIC ACPI SCI IRQ is supported by the system. The options
are Enabled and Disabled.
This feature is used to enable system to function without a keyboard, monitor or mouse attached
The options are Enabled and Disabled.
Select Enabled to use the feature Non-Uniform Memory Access to improve CPU performance.
The options are Enabled and Disabled.
Select Enabled to activate the High Performance 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 and reducing the dependency on other timestamp
calculation devices, such as an x86 RDTSC Instruction embedded in the CPU. The High
Performance Event Timer is used to replace the 8254 Programmable Interval Timer. The options
are Enabled and Disabled.
007-5653-001
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