User`s manual

Chapter 4: BIOS
4-13
tems in one physical computer. The options are Enabled and Disabled. (*Note:
If there is any change to this setting, you will need to power off and restart
the system for the change to take effect.) Please refer to Intel’s web site for
detailed information.
Set Maximum Ext. CPUID=3
When set to Enabled, the Maximum Extended CPUID will be set to 3. The options
are Disabled and Enabled.
Echo TPR
Select Disabled to prevent xTPR messages from being sent on the system bus.
The options are Disabled and Enabled. (*For detailed information, please refer to
Intel 64 and IA-32 Architectures Software Developer's Manuals located at: www.
intel.com/products/processor/manuals/).
C1 Enhanced Mode (*Available when supported by the CPU.)
Set to Enabled to enable the function of Enhanced Halt State to lower CPU
voltage/frequency to prevent overheat. The options are Enabled and Disabled.
(*Note: please refer to Intel’s web site for detailed information.)
No Execute Mode Memory Protection
Set to Enabled to enable Execute Disable Bit and allow the processor to classify
areas in memory where an application code can execute and where it cannot, and
thus preventing a worm or a virus from inserting and creating a fl ood of codes to
overwhelm the processor or damage the system during an attack.
(*Note: this feature is available when your OS and your CPU support the function
of Execute Disable Bit.) The options are Disabled and Enabled. (Note: For more
information regarding hardware/software support for this function, please refer to
Intel's and Microsoft's web sites.)
Processor Power Management (*Available when supported by the CPU.)
This feature allows the user to determine the processor power management mode.
The options are Disabled and C States Only. If set to Disabled, C States and GV1/
GV3 are disabled. If set to C States only, the processor power will be controlled
through CPU power states in the APCI setting.