Supermicro B2SD2-8C-TF User Manual page 53

EIST PSD Funtion
This setting allows you to choose between Hardware and Software to control the proces-
sor's frequency and performance (P-state). In HW_ALL mode, the processor hardware
is responsible for coordinating the P-state, and the OS is responsible for keeping the
P-state request up to date on all Logical Processors. In SW_ALL mode, the OS Power
Manager is responsible for coordinating the P-state, and must initiate the transition on
all Logical Processors. In SW_ANY mode, the OS Power Manager is responsible for
coordinating the P-state and may initiate the transition on any Logical Processors. The
options are HW_ALL and SW_ALL.
Energy Efficient Turbo
Use this feature to enable or disable energy efficient turbo. The options are Enable and
Disable.
Turbo Mode
This feature will enable dynamic control of the processor, allowing it to run above stock
frequency. The options are Disable and Enable.
 Hardware PM State Control
Hardware P-States
This setting allows you to select between OS and hardware-controlled P-states. Select-
ing Native Mode allows the OS to choose a P-state. Selecting Out of Band Mode allows
the hardware to autonomously choose a P-state without OS guidance. Selecting Native
Mode with No Legacy Support functions as Native Mode with no support for older hard-
ware. The options are Disable, Native Mode, Out of Band Mode, and Native Mode with
No Legacy Support.
 CPU C State Control
Autonomous Core C-State
Enabling this setting allows the hardware to autonomously choose to enter a C-state
based on power consumption and clock speed. The options are Disable and Enable.
This feature must be set to Disable to be able to configure the next two features.
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.
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Chapter 4: BIOS