User manual

47 Chapter 3
Max CPUID Value Limit
This is disabled for Windows XP.
Intel(R) Virtualization Technology
This feature is used to enable or disable the Intel Virtualization Technol-
ogy (IVT) extension. It allows multiple operating systems to run simulta-
neously on the same system. It does this by creating virtual machines,
each running its own x86 operating system.
Execute Disable Bit
This item specifies the Execute Disable Bit Feature. The settings are
Enabled and Disabled. The Optimal and Fail-Safe default setting is
Enabled. If Disabled is selected, the BIOS forces the XD feature flag to
always return to 0.
Core Multi-Processing
When this option disabled, BIOS disables one execution core.
PECI
You may choose to disable or enable the Platform Environment Control
Interface function.