Supermicro X13DGU User Manual page 107

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 automatically demote to C1 State. Please reboot the system for the change(s) you've
made to take effect. The options are Disable, Enable, and Auto.
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, 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 optimize and reduce CPU package power consumption in the idle mode. Please note that the changes
you've made in this setting will affect all CPU cores or the circuits of the entire system. The options are C0/C1 state, C2
state, C6 (non Retention) state, C6 (Retention) state, No Limit, and Auto.
CPU1 Core Disable Bitmap / CPU2 Core Disable Bitmap

Available Bitmap:
This feature displays the available bitmap.
Disable Bitmap
Enter 0 to enable this feature for all CPU cores. Enter FFFFFFFFFFF to disable this feature
for all CPU cores. Please note that at least one core per CPU must be enabled. Disabling
all cores is not allowed. The default setting is 0.
Hyper-Threading [ALL]
Select Enable to use Intel Hyper-Threading Technology to enhance CPU performance. The
options are Enable and Disable.
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Chapter 4: UEFI BIOS