Asus P8H67-I PRO - Manual (Page 47)

Chapter 2: BIOS information 2-17
Limit CPUID Maximum [Disabled]
[Enabled] Allows legacy operating systems to boot even without support for CPUs
with extended CPUID functions.
[Disabled] Disables this function.
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(R) Virtualization Technology [Disabled]
[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.
Enhanced Intel SpeedStep Technology [Enabled]
Allows you to enable or disable the Enhanced Intel ® SpeedStep Technology (EIST).
[Disabled] The CPU runs at its default speed.
[Enabled] The operating system controls the CPU speed.
Turbo Mode [Enabled]
This item appears only when you set the Enhanced Intel SpeedStep Technology item to
[Enabled] and allows you to enable or disable the Intel ® Turbo Mode Technology.
[Enabled] Allows processor cores to run faster than marked frequency in specific
condition.
[Disabled] Disables this function.
CPU C1E [Enabled]
[Enabled] Enables the C1E support function. This item should be enabled in order to
enable the Enhanced Halt State.
[Disabled] Disables this function.
CPU C3 Report [Disabled]
Allows you to disable or enable the CPU C3 report to the operating system. Configuration
options: [Disabled] [Enabled]
CPU C6 Report [Enabled]
Allows you to disable or enable the CPU C6 report to the operating system. Configuration
options: [Enabled] [Disabled]
2.5.2 System Agent Configuration
Initiate Graphic Adapter [PEG/iGPU]
Allows you to decide which graphics controller to use as the primary boot device.
Configuration options: [iGPU] [PEG/iGPU]
iGPU Memory [64M]
Allows you to set the iGPU memory size. Configuration options: [32M] [64M] [96M] [128M]