Asus V9-P8H77E - Manual (Page 80)

4-16 Chapter 4: BIOS setup
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 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.
Hardware Prefetcher [Enabled]
[Enabled] Turns on the Mid Level Cache (L2) streamer prefetcher.
[Disabled] Turns off the Mid Level Cache (L2) streamer prefetcher.
Adjacent Cache Line Prefetch [Enabled]
[Enabled] Turns on prefetching of adjacent cache lines.
[Disabled] Turns off prefetching of adjacent cache lines.
CPU Power Management Configuration
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.
CPU C1E [Auto]
Enables or disables the C1E support function. This item should be enabled in order to
enable the Enhanced Halt State. Configuration options: [Auto] [Enabled] [Disabled]
CPU C3 Report [Auto]
Allows you to disable or enable the CPU C3 report to the operating system.
Configuration options: [Auto] [Enabled] [Disabled]
CPU C6 Report [Auto]
Allows you to disable or enable the CPU C6 report to the operating system.
Configuration options: [Auto] [Enabled] [Disabled]