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Chapter 4: UEFI BIOS
Frequency Prioritization (Available when "Power Technology" is set to
Custom, "Hardware P-states" is set to Native Mode or Native Mode with
No Legacy Support, and when your processor supports Intel SST-CP)
SST-CP
With Intel Speed Select Technology (Intel SST-CP), surplus frequency is allocated based
on the cores' weights. The weight for each core is assigned by the OS or the Virtual
Machine Manager (VMM). The options are Enable and Disable.
CPU C State Control
Enable Monitor MWAIT
Select Enable to support Monitor and Mwait, which are two instructions in Streaming
SIMD Extension 3 (SSE3), to improve synchronization between multiple threads for CPU
performance enhancement. The options are Disable, Enable, and Auto.
CPU C1 Auto Demotion
Enable this feature to allow CPU to automatically demote to the C1 state. Reboot the
system for the change to take effect. The options are Disable, Enable, and Auto.
CPU C6 Report
Select Enable to allow the BIOS to report the CPU C6 State (ACPI C3) to the operating
system. During the CPU C6 State, the power to all cache is turned off. The options are
Disable, Enable, and Auto. (ACPI is the abbreviation for Advanced Configuration and
Power Interface.)
Enhanced Halt State (C1E)
Select Enable to enable "Enhanced Halt State" support, which will significantly reduce the
CPU's power consumption by minimizing CPU's clock cycles and reduce voltage during
a "Halt State". The options are Disable and Enable.
Package C State Control
Package C State
Use this feature to optimize and reduce CPU package power consumption in the idle
mode. Please note that the changes you've made in this setting will affect all CPU cores
or the circuits of the entire system. The options are C0/C1 state, C2 state, C6 (non Re-
tention) state, C6 (Retention) state, No Limit, and Auto.
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