Asus P2-P5945GC - Manual (Page 77)

5-22 Chapter 5: BIOS setup
Max CPUID Value Limit [Disabled]
Enable this item to boot legacy operating systems that cannot support
CPUs with extended CPUID functions.
Configuration options: [Disabled] [Enabled]
Execute Disable Function [Disabled]
Enables or disables the Execute Disable function. This item appears only
when you install a processor with the Execute Disable function.
Configuration options: [Disabled] [Enabled]
Enhanced C1 Control [Auto]
When set to [Auto], the BIOS will automatically check the CPU’s capability
to enable the C1E support. In C1E mode, the CPU power consumption is
lower when idle. Configuration options: [Auto] [Disabled]
CPU Internal Thermal Control [Auto]
Disables or sets the CPU internal thermal control.
Configuration options: [Disabled] [Auto]
Hyper-Threading Technology [Disabled]
Allows you to enable or disable the processor Hyper-Threading Technology.
Configuration options: [Disabled] [Enabled]