Asus RAMPAGE IV GENE - Manual (Page 98)

3-24 Chapter 3: BIOS setup
Chapter 3
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.
Execute Disable Bit [Enabled]
[Enabled] Enables the No-Execution Page Protection Technology.
[Disabled] Forces the XD feature flag to always return to zero (0).
Hardware Prefetcher [Enabled]
[Enabled] Enables the mid-level cache (L2) streamer prefetcher.
[Disabled] Disables this function.
Adjacent Cache Line Prefetch [Enabled]
[Enabled] Enables the prefetching of adjacent cache lines.
[Disabled] Disables this function.
Intel Virtualization Technology [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 you to set the ratio between the CPU Core Clock and the BCLK Frequency. Use
<+> and <-> keys to adjust the ratio. The valid value ranges vary according to your
CPU model.
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]
[Disabled] Disables this function.
[Enabled] Allows processor cores to run faster than marked frequency in specific
condition.
CPU C1E [Auto]
[Auto] Sets the default configuration.
[Disabled] Disables this function.
[Enabled] Enables the C1E support function. This item should be enabled in order to
enable the Enhanced Halt State.