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Energy Performance BIAS Setting (Available when "Power Performance Tuning" is
set to BIOS Controls EPB)
Use this feature to set the processor power use policy to achieve the desired operation
settings for your machine by prioritizing system performance or energy savings. Select
Maximum Performance to maximize system performance (to its highest potential); however,
this may result in maximum power consumption as energy is needed to fuel the processor
frequency. The higher the performance is, the higher the power consumption will be.
Select Max Power Efficient to maximize power saving; however, system performance may
be substantially impacted because limited power use decreases the processor frequency.
The options are Maximum Performance, Performance, Balanced Performance, Balanced
Power, Power, and Max Power Efficient.
CPU P State Control
SpeedStep (PStates)
EIST (Enhanced Intel SpeedStep Technology) allows the system to automatically adjust
processor voltage and core frequency in an effort to reduce power consumption and heat
dissipation. Please refer to Intel's website for detailed information. The options are Disable
and Enable.
EIST PSD Function (Available when SpeedStep is set to Enable)
Use this item to configure the processor's P-State coordination settings. During a P-State,
the voltage and frequency of the processor will be reduced when it is in operation. This
makes the processor more energy efficient, resulting in further energy gains. The options
are HW_ALL, SW_ALL and SW-ANY.
Turbo Mode (Available when SpeedStep is set to Enable)
Select Enable for processor cores to run faster than the frequency specified by the
manufacturer. The options are Disable and Enable.
Hardware PM (Power Management) State Control
Hardware P-States
If this feature is set to Disable, 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 OS guidance. If this feature is set to Native Mode with No Legacy Support,
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.
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Chapter 6: UEFI BIOS
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