Advantech UNO-137 V2 User Manual page 61

CPU Power Management Control:
Boot Performance Mode

Select the performance state that the BIOS will set starting from reset vector.
®
Intel Speed Step (tm)

Allows more than two frequency ranges to be supported.
Race to Halt (RTH)

Enable/Disable Race to Halt feature. RTH will dynamically increase CPU fre-
quency in order to enter pkg C-State faster to reduce overall power. (RTH is
controlled through MSR 1FC bit 20)
®
Intel Speed Shift Technology

To enable or disable Intel
the CPPC v2 interface to allow for hardware controlled P-state.
HwP Autonomous EPP Grouping

HDC Control

This option allows HDC configuration.
Disabled: Disable HDC.
Enabled: Can be enabled by OS if OS native support is available.
CPU VR Settings

Platform PL1 Enable

Enable/Disable platform power limit 1 programming. If this option is enabled, it
activates the PL1 value to be used by the processor to limit the average power
of given time window.
Platform PL2 Enable

Enable/Disable platform power limit 2 programming. If this option is disabled,
BIOS will program the default values for platform power limit 2.
Power Limit 4 Override

Enable/Disable platform power limit 4 override. If this option is disabled, BIOS
will leave the default values for platform power limit 4.
C states

Enable/Disable CPU power management. Allows CPU to go to C states when
it's not 100% utilized.
Thermal Monitor

Enable/Disable thermal monitor.
Interrupt Redirection Mode Selection

Interrupt redirection mode select for logical Interrupts.
Timed MWAIT

Enable/Disable timed MWAIT support.
Custom P-state Table

Add custom P-state table
EC Turbo Control Mode

Enable/Disable EC turbo control mode.
Energy Performance Gain

Enable/Disable energy performance gain.
CPU Lock Configuration

®
Speed Shift technology support. Enabling will expose
47 UNO-137 V2 User Manual