NEC Express5800 Series Maintenance Manual page 55

Chapter 2 Useful Features
(b) Processor Power Management Submenu
For details about the options, see the table below.
Option
Power Management Policy
Processor C3 Report
Processor C6 Report
Package C State Limit
EIST
Energy Performance
Turbo Boost
Energy Efficient Turbo
P-STATE Coordination
Workload Sensitivity
Uncore Frequency Scaling
Uncore Frequency
Coordination
Parameter
Performance Preferred Specifies the power management policy.
Energy Preferred Menu items below are selectable when Custom is specified.
[Custom]
[Disabled] Enables or disables the feature to report the processor C3 state
to OS.
Enabled
[Disabled] Enables or disables the feature to report the processor C6 state
Enabled to OS.
C0/C1 Specifies the upper limit for Package C state of the processor.
C2
C6(non Retention)
C6(Retention)
[No Limit]
Disabled Enables or disables Enhanced Intel SpeedStep Technology.
[Enabled] This option is displayed only when the installed processor
supports this feature.
Performance Specifies whether the performance is preferred or energy-saving
[Balanced Performance] is preferred while processor is running.
This option is displayed when EIST is set to Enabled.
Balanced Power
Power
Disabled Enables or disables the Turbo Boost Technology. This option is
displayed when EIST is set to Enabled.
[Enabled]
This option is displayed only when the installed processor
supports this feature.
Disabled Enables or disables Energy Efficient Turbo feature. This option is
displayed when EIST is set to Enabled and Turbo Boost is set to
[Enabled]
Enabled.
[HW_ALL] Specifies the type of P-STATE Coordination.
SW_ALL This option is displayed when EIST is set to Enabled.
SW_ANY
[Balanced] Select I/O sensitive when system performance should take
I/O sensitive precedence over the I/O workload.
Disabled Enables or disables the feature that adjusts the Uncore operating
[Enabled] frequency dynamically.
[Disabled] Enables or disables the feature that adjusts the operating
frequency of Uncore in each processor. This option is displayed
Enabled
when Uncore Frequency Scaling is set to Enabled.
Express5800/B120f-h Maintenance Guide
Description
[ ]: Factory setting
1. System BIOS
55