Supermicro X9DRH-ITF User Manual download pdf (Page 79)

Chapter 4: AMI BIOS

4-7

Execute-Disable Bit Capability (Available if supported by the OS & the

CPU)

Set to Enabled to enable the Execute Disable Bit, which will allow the processor

to designate areas in the system memory where an application code can execute

and where it cannot, thus preventing a worm or a virus from ooding illegal

codes to overwhelm the processor or damage the system during an attack. The

default is Enabled. (Refer to Intel and Microsoft Web Sites for more information.)

Intel

AES-NI

Select Enable to use the Intel Advanced Encryption Standard (AES) New In-

structions (NI) to ensure data security. The options are Enabled and Disabled.

DCU Streamer Prefetcher (Available when supported by the CPU)

Select Enabled to support Data Cache Unit (DCU) prefetch to speed up data

accessing and processing in the DCU to enhance CPU performance. The options

are Disabled and Enabled.

DCU IP Prefetcher

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 Enabled and Disabled.

Intel

Virtualization Technology (Available when supported by the CPU)

Select Enabled 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 Enabled and Disabled.

Note: If there is any change to this setting, you will need to power off and

restart the system for the change to take effect. Please refer to Intel's

website for detailed information.

Clock Spread Spectrum

Select Enabled to enable Clock Spectrum support, which will allow the BIOS to

monitor and attempt to reduce the level of Electromagnetic Interference caused

by the components whenever needed. The options are Disabled and Enabled.



CPUPowerManagementConguration

This submenu allows the user to congure the following CPU Power Manage-

ment settings.

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Supermicro X9DRH-ITF User Manual Page 79