Chapter 4: UEFI BIOS
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DCU IP Prefetcher (Available when supported by the CPU)
Select Enabled for DCU (Data Cache Unit) IP Prefetcher support, which 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 Enabled, the hardware prefetcher will prefetch streams of data and
instructions from the main memory to the L3 cache to improve CPU performance. The options
are Disable and Enable.
Extended APIC
Select Enable to activate APIC (Advanced Programmable Interrupt Controller) support. 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 Disable and Enable.
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.
*If the feature above is set to Custom, the following features will become available
for user's configuration
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 supported by the Processor and when
"Power Performance Tuning" is set to BIOS Controls EPB)
Use this feature to set the processor power use policy to achieve the desired operation
settings for your machine by prioritizing system performance or energy savings. Select
Maximum Performance to maximize system performance (to its highest potential); however,
this may result in maximum power consumption as energy is needed to fuel the processor
frequency. The higher the performance is, the higher the power consumption will be.
Select Max Power Efficient to maximize power saving; however, system performance may
be substantially impacted because limited power use decreases the processor frequency.
The options are Maximum Performance, Performance, Balanced Performance, Balanced
Power, and Power.
