Gigabyte E251-U70, User Manual, Page: 80 / 111

BIOS Setup - 80 -
Parameter
Description
Hardware PM State Control
Press [Enter] to configure advanced items.
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Hardware P-States
– When this item is disabled, the processor hardware chooses a
P-state based on OS Request (Legacy P-States).
– In Native mode, the processor hardware chooses a P-state based
on OS guidance.
– In Out of Band mode, the processor hardware autonomously
chooses a P-state (with no OS guidance).
– Options available: Disable, Native Mode, Out of Band Mode, Native
Mode with No Legacy Support. Default setting is Native Mode .
CPU C State Control
Press [Enter] to configure advanced items.
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Autonomous Core C-State
– Enable/Disable the Autonomous Core C-State Control.
– Options available: Enable/Disable. Default setting is Disable .
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CPU C6 Report
– Allows you to determine whether to let the CPU enter C6 mode
in system halt state. When enabled, the CPU core frequency and
voltage will be reduced during system halt state to decrease power
consumption. The C6 state is a more enhanced power-saving state
than C1.
– Options available: Disable/Enable/Auto. Default setting is Auto .
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Enhanced Halt State (C1E)
(Note)
– Core C1E auto promotion control. Takes effect after reboot.
– Options available: Enable/Disable. Default setting is Enable .
Package C State Control
Configures the state for the C-State package limit.
Options available: C0/C1 state, C2 state, C6(non Retention) state,
C6(Retention) state, No Limit, Auto.
Default setting is
Auto .
CPU - Advanced PM Tuning
Press [Enter] to configure advanced items.
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Energy Perf BIAS
– Enters the Energy Perf BIAS submenu.
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Power Performance Tuning
(Note)
– Tunes the Power Performance Configuration mode. When enabled,
uses IA32_ENERGY_PERF_BIAS input from the core. When
disabled, uses alternate performance BIAS input from ENERGY_
PERF_BIAS_CONFIG.
– Options available: OS Controls EPB/BIOS Controls EPB. Default
setting is OS Controls EPB .
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Energy_PERF_BIAS_CFG mode
– Selects the Energy Performance Bias Configuration Mode.
– Options available: Performance, Balanced Performance, Balanced
Power, Power. Default setting is Balanced Performance .
– Please note that this item is configurable when Power Performance
Tuning is set to BIOS Controls EPB.
(Note) Advanced items prompt when this item is defined.