Asus P9X79-E WS User Guide - Page 102

Active Processor Cores [All], Limit CPUID Maximum [Disabled], Execute Disable Bit [Enabled], Intel

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Active Processor Cores [All] Allows you to choose the number of CPU cores to activate in each processor package. Configuration options: [All] [1] [2] [3] [4] [5] Limit CPUID Maximum [Disabled] [Enabled] [Disabled] Allows legacy operating systems to boot even without support for CPUs with extended CPUID functions. Disables this function (for Windows XP). Execute Disable Bit [Enabled] [Enabled] [Disabled] Enables the No-Execution Page Protection Technology. Forces the XD feature flag to always return to zero (0). Intel Virtualization Tech [Enabled] [Enabled] [Disabled] Allows a hardware platform to run multiple operating systems separately and simultaneously, enabling one system to virtually function as several systems. Disables this function. CPU Power Management Configuration CPU Ratio [Auto] Allows user to manually adjust the maximum non-turbo CPU ratio. The value will be limited to CPU-based or factory setting. Use and keys to adjust the ratio. The values range from 12 to 22 with a 1 interval. (The valid value ranges may vary according to your CPU model.) [Values 12~20] Presets Enhanced Intel SpeedStep Technology and Turbo Mode to [Disabled] but can be adjusted. [Values 21~22] Disallows configuration for Turbo Mode. Enhanced Intel SpeedStep Technology [Enabled] Enhanced Intel® SpeedStep Technology (EIST) allows the system operation to dynamically adjust processor voltage and cores frequency, which can result in decreased average power consumption and decreased average heat production. [Disabled] The CPU runs at its default speed. [Enabled] The operating system controls the CPU speed. Turbo Mode [Enabled] This automatically allows processor cores to run faster than the base operating frequency if it's operating below power, current, and temperature specification limit. [Disabled] Disables this function. [Enabled] Allows processor cores to run faster than marked frequency in specific condition. CPU C1E [Auto] [Auto] [Disabled] [Enabled] Set this item automatically. Disables this function. Enables the C1E support function. This item should be enabled in order to enable the Enhanced Halt State. 3-26 Chapter 3: BIOS setup

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3-26
Chapter 3: BIOS setup
Active Processor Cores [All]
Allows you to choose the number of CPU cores to activate in each processor package.
Configuration options: [All] [1] [2] [3] [4] [5]
Limit CPUID Maximum [Disabled]
[Enabled]
Allows legacy operating systems to boot even without support for
CPUs with extended CPUID functions.
[Disabled]
Disables this function (for Windows XP).
Execute Disable Bit [Enabled]
[Enabled]
Enables the No-Execution Page Protection Technology.
[Disabled]
Forces the XD feature flag to always return to zero (0).
Intel Virtualization Tech [Enabled]
[Enabled]
Allows a hardware platform to run multiple operating systems
separately and simultaneously, enabling one system to virtually
function as several systems.
[Disabled]
Disables this function.
CPU Power Management Configuration
CPU Ratio [Auto]
Allows user to manually adjust the maximum non-turbo CPU ratio. The value will be limited to
CPU-based or factory setting.
Use <+> and <-> keys to adjust the ratio. The values range from 12 to 22 with a 1 interval.
(The valid value ranges may vary according to your CPU model.)
[Values 12~20]
Presets
Enhanced Intel SpeedStep Technology
and
Turbo
Mode
to [Disabled] but can be adjusted.
[Values 21~22]
Disallows configuration for
Turbo Mode
.
Enhanced Intel SpeedStep Technology [Enabled]
Enhanced Intel
®
SpeedStep Technology (EIST) allows the system operation to dynamically
adjust processor voltage and cores frequency, which can result in decreased average power
consumption and decreased average heat production.
[Disabled]
The CPU runs at its default speed.
[Enabled]
The operating system controls the CPU speed.
Turbo Mode [Enabled]
This automatically allows processor cores to run faster than the base operating frequency if
it’s operating below power, current, and temperature specification limit.
[Disabled]
Disables this function.
[Enabled]
Allows processor cores to run faster than marked frequency in
specific condition.
CPU C1E [Auto]
[Auto]
Set this item automatically.
[Disabled]
Disables this function.
[Enabled]
Enables the C1E support function. This item should be enabled in
order to enable the Enhanced Halt State.