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CPU C State Control
Autonomous Core C-State
Select Enable to support Autonomous Core C-State control which will allow the processor
core to control its C-State setting automatically and independently. The options are Enable
and Disable.
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, power to all caches is turned off. The options are Auto,
Enable, and Disable.
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 set the limit on the C-State package register. The options are C0/1 state,
C2 state, C6 (non-Retention) state, C6 (Retention) state, No Limit, and Auto.
CPU T State Control
Software Controlled T-States
If this feature is set to Enable, CPU throttling settings will be supported by the software of
the system. The options are Disable and Enable.
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Chapter 6: BIOS
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