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Enabled
C1E Support
Disabled
This should be enabled in order to
enable or disable the “Enhanced
Halt State”.
Enabled
Hardware Prefetcher
Disabled
For UP platforms, leave it enabled.
For DP/MP servers, it may use to
tune performance to the specific
application.
Enabled
Adjacent Cache Line
Prefetch
Disabled
For UP platforms, leave it enabled.
For DP/MP servers, it may use to
tune performance to the specific
application.
Enabled
Max CPUID Value Limit
Disabled
Disabled for Windows XP
Enabled
Intel
®
Virtualization Tech
Disabled
When enabled, a VMM can utilize
the additional HW caps. Provided
by Intel
®
Virtualization Tech.
Note: A full reset is required to
change the setting.
Enabled
Execute-Disable Bit
Capability
Disabled
When disabled, force the XD
feature flag to always return 0.
Enabled
Intel
®
HT Technology
Disabled
When disabled, only one thread
per enabled core is enabled.
Active Processor Cores All
Number of cores to enable in each
processor package
Disabled
A20M
Enabled
Legacy OSes and APs may need
A20M enabled.
Disabled
Intel
®
SpeedStep
TM
Tech
Enabled
Enable (GV3)
Disable (GV3)
NOTE: Intel
®
TurboMode Tech will appear when Intel
®
SpeedStep
TM
Tech is set to
[Enabled].
Disabled
Intel
®
TurboMode Tech
Enabled
Turbo mode allows processor
cores to run faster than marked
frequency in specific condition.
Disabled
Intel
®
C-STATE Tech
Enabled
C-State: CPU idle is set to
C2/C3/C4
NOTE: C3 State and C6 State will appear when Intel
®
SpeedStep
TM
Tech is set to
[Disabled].