Chapter 7: BIOS
7-7
If this feature is set to Enable, the DCU (Data Cache Unit) IP prefetcher will prefetch
the IP address in advance to improve network connectivity and system performance.
The options are Disable and Enable.
Direct Cache Access (DCA)
Select Enable to use Intel's DCA (Direct Cache Access) technology to improve data
transfer efciency. The options are Disable, Enable, and Auto.
X2APIC
Select Enable to support the APIC (Advanced Programmable Interrupt Controller)
extended mode for system performance enhancement. The options are Enable
and Disable.
AES-NI
Select Enable to use the Intel Advanced Encryption Standard (AES) New Instruc-
tions (NI) to ensure data security. The options are Enable and Disable.
Intel® Virtualization Technology (Available when supported by the CPU)
Select Enable to support Intel Virtualization Technology, which will allow one
platform to run multiple operating systems and applications in independent parti-
tions, creating multiple "virtual" systems in one physical computer. The options
are Enable and Disable.
Note: If a change is made to this setting, you will need to reboot the
system for the change to take effect. Refer to Intel’s website for detailed
information.
Advanced Power Management Conguration
This section is used to congure the following CPU Power Management settings.
Power Technology
Select Energy Efciency to support power-saving mode. Select Custom to custom-
ize system power settings. Select Disabled to disable power-saving settings. The
options are Disable, Energy Efciency, and Custom.
Energy Performance Tuning
Select Enable to support energy-performance tuning to enhance CPU energy ef-
ciency. The options are Enable and Disable.
Energy Performance Bias Setting
Use this feature to select an appropriate fan-speed setting for your system. Select
Performance to maximize system performance with maximum cooling, which will
increase power consumption. Select Power to maximize energy efciency by reduc-
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