Chapter 6: UEFI BIOS
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DCU IP Prefetcher
If this feature is set to Enable, the IP prefetcher in the DCU (Data Cache Unit) will prefetch
IP addresses to improve network connectivity and system performance. The options are
Enable
and Disable.
LLC Prefetch
If this feature is set to Enable, LLC (hardware cache) prefetching on all threads will be
supported. The options are
Disable
and Enable.
Extended APIC (Extended Advanced Programmable Interrupt Controller)
Based on the Intel Hyper-Threading technology, each logical processor (thread) is assigned
256 APIC IDs (APIDs) in 8-bit bandwidth. When this feature is set to Enable, the APIC ID
will be expanded from 8 bits to 16 bits to provide 512 APIDs to each thread to enhance CPU
performance. The options are
Disable
and Enable.
AES-NI
Select Enable to use the Intel Advanced Encryption Standard (AES) New Instructions (NI) to
ensure data security. The options are
Enable
and Disable.
Advanced Power Management Configuration
Power Technology
Select Energy Efficient to support power-saving mode. Select Custom to customize system
power settings. Select Disabled to disable power-saving settings. The options are Disable,
Energy Efficient
, and Custom.
Power Performance Tuning (Available when "Power Technology" is set to Custom)
Select BIOS to allow the system BIOS to configure the Power-Performance Tuning Bias
setting below. The options are BIOS Controls EPB and
OS Controls EPB
.
ENERGY_PERF_BIAS_CFG Mode (ENERGY PERFORMANCE BIAS
CONFIGURATION Mode) (Available when "Power Performance Tuning" is set to
BIOS Controls EPB)
This feature is internally used by the processor to control power settings vs performance
features including Energy Efficient P-State/Demotion/Undemotion etc. The options are
Maximum Performance, Performance,
Balanced Performance
, Balanced Power, Power,
and Max Power Efficient.
