C1E Function
Enabled, this function reduces the CPU power consumption when the CPU is idle. Idle occurs when the operating system issues a halt instruction.
Execute Disable Bit
When this function is disabled, it forces the XD feature flag to always return to zero (0).
Virtualization Technology
When this function is enabled, it allows a VMM to utilize the additional hardware capabilities provided by Intel Virtualization Technology.
CPU Clock Ratio Unlock
Select Enabled, if you install a CPU that supports this feature. The following item become available to select a multiplier to set the CPU frequency. If your CPU multiplier is locked this option will be unavailable.