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CPU C State Control (Available when Power Technology
is set to Custom)
Package C State limit
Use this item to set the limit on the C-State package register. The options are
C0/1 state, C2 state, C6 (non-Retention) state, and C6 (Retention) state.
CPU C3 Report
Select Enable to allow the BIOS to report the CPU C3 State (ACPI C2) to the
operating system. During the CPU C3 State, the CPU clock generator is turned
off. The options are Enable and Disable.
CPU C6 Report (Available when Power Technology is set to Custom)
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 cache is turned off.
The options are Enable and Disable.
Enhanced Halt State (C1E)
Select Enable to use Enhanced Halt-State technology, which will significantly
reduce the CPU's power consumption by reducing the CPU's clock cycle and
voltage during a Halt-state. You will need to reboot the system for the change
of this setting to take effect. The options are Disable and Enable.
CPU T State Control (Available when Power Technology
is set to Custom)
ACPI (Advanced Configuration Power Interface) T-States
Select Enable to support CPU throttling by the operating system to reduce power
consumption. The options are Enable and Disable.
Energy Performance Tuning
Select Enable to support energy-performance tuning to enhance CPU performance.
The options are Enable and Disable.
Energy Performance Bias Setting
Use this feature to select an appropriate fan setting to achieve maximum system
performance (with maximum cooling) or maximum energy efficiency with maximum
power saving). The fan speeds are controlled by the firmware management via
IPMI 2.0. The options are Performance, Balanced Performance, Balanced Power,
and Power.
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Chapter 4: AMI BIOS
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