Chapter 7: BIOS
7-7
P-STATE Coordination
This feature selects the type of coordination for the P-State of the processor.
P-State is a processor operational state that reduces the processor's voltage
and frequency. This makes the processor more energy ef
fi
cient, resulting in
further gains. The options are
HW_ALL
, SW_ALL and SW_ANY.
C1E Support (Available when Power Technology is set to Custom)
Select Enabled to enable Enhanced C1 Power State to boost system
performance. The options are
Enabled
and Disabled.
CPU C3 Report (Available when Power Technology is set to
Custom)
Select Enabled to allow the BIOS to report the CPU C3 State (ACPI C2) to
the operating system. During the CPU C3 State, the CPU clock generator
is turned off. The options are Enabled and
Disabled.
CPU C6 Report (Available when Power Technology is set to
Custom)
Select Enabled 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
Enabled
and Disabled.
CPU C7 Report (Available when Power Technology is set to
Custom)
Select Enabled to allow the BIOS to report the CPU C7 State (ACPI C3) to
the operating system. CPU C7 State is a processor-speci
fi
c low C-State.
The options are
Enabled
and Disabled.
Package C-State limit (Available when Power Technology is set to
Custom)
This feature allows the user to set the limit on the C-State package register.
The options are C0, C2,
C6,
and No Limit.
Energy Performance Bias
This setting allows the user to adjust the fan speed based on performance
(maximum cooling) or energy ef
fi
ciency (maximum energy savings). The
options are Performance,
Balanced Performance
, Balanced Energy, and
Energy Ef
fi
cient.
Factory Long Duration Power Limit
This item displays the power limit (in watts) set by the manufacturer during
which long duration power is maintained.
