Supermicro X13SEI-TF User Manual page 72

Super X13SEI-TF/-F User's Manual
EIST PSD Function (Available when "SpeedStep (P-States)" is set to Enable)
This feature reduces the latency that occurs when one P-state changes to another, thus
allowing the transitions to occur more frequently. This feature allows for more demand-
based P-state switching based on real-time energy needs of applications and optimize
the power-to-performance balance for energy efficiency. The options are HW_ALL and
SW_ALL.
Turbo Mode (Available when "SpeedStep (P-States)" is set to Enable)
Select Enable to allow the CPU to operate at the manufacturer-defined turbo speed by
increasing CPU clock frequency. This feature is available when it is supported by the
processors used in the system. The options are Disable and Enable.
Hardware PM State Control
Hardware P-States
If this feature is set to Disable, system hardware will choose a P-state setting for the
system based on an OS request. If this feature is set to Native Mode, hardware will
choose a P-state setting based on the OS guidance. If this feature is set to Native Mode
with No Legacy Support, system hardware will choose a P-state setting independently
without OS guidance. The options are Disable, Native Mode, Out of Band Mode, and
Native Mode with No Legacy Support.
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
Select Enable to allow the CPU to demote C3, C6, or C7 requests to C1 based on un-
core auto-demote information. The options are Disable and Enable.
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.
Enhanced Halt State (C1E)
Select Enable to enable "Enhanced Halt State" support. This feature 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.
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