Chapter 6: UEFI BIOS
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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
.
Chipset Configuration
Warning:
Setting the wrong values in the following sections may cause the system to malfunc-
tion.
