Chapter 6: UEFI BIOS
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ENERGY_PERF_BIAS_CFG Mode (Available when Power Performance Tuning is
set to BIOS Controls EPB)
performance settings. Select Maximum Performance to set the highest performance. Select
to prioritize performance optimization while conserving energy. Select Balanced Power
to prioritize energy conservation while maintaining good performance. Select Power to
Performance, Balanced Performance, Balanced Power, and Power.
CPU P State Control (Available when Power Technology is set to
Custom)
SpeedStep (Pstates)
EIST (Enhanced Intel® SpeedStep™ Technology) allows the system to automatically
dissipation. The options are Disable and Enable.
EIST PSD Function
This feature allows the user to change the P-State (Power-Performance State) coordina-
tion type. P-State is also known as "SpeedStep" for Intel® processors. Select HW_ALL to
change the P-State coordination type for all hardware components only. Select SW_ALL
to change the P-State coordination type for all software installed in the system. Select
SW_ANY to change the P-State coordination type for a particular software program
HW_ALL, SW_ALL, and SW_ANY.
Turbo Mode (Available when Intel® EIST Technology is enabled)
Select Enable to use the Turbo Mode to boost system performance. The options are
Disable and Enable.
Hardware PM State Control (Available when Power Technology is set
to Custom)
Hardware P-States
This feature enables the hardware P-States support. The options are Disable, Native
Mode, Out of Band Mode, and Native Mode with No Legacy Support.
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