Lenovo ThinkPad T420 (English) User Guide - Page 203

Enabled, Maximum Performance, Battery Optimized, Disabled, Balanced, Normal, Power

Page 203 highlights

Table 8. Config menu items (continued) Power Intel SpeedStep® technology (Intel SpeedStep mounted models only) Adaptive Thermal Management Optical Drive Speed CPU Power Management PCI Express Power Management Power On with AC Attach • Disabled • Enabled Select the mode of Intel SpeedStep technology at runtime. Mode for AC • Maximum Performance • Battery Optimized Mode for Battery Maximum Performance: Always highest speed Battery Optimized: Always lowest speed • Maximum Performance • Battery Optimized Disabled: No runtime support, lowest speed Scheme for AC • Maximize Performance • Balanced Scheme for Battery This select a thermal management scheme to use. Maximize Performance: Reduces CPU throttling • Maximize Performance • Balanced Balanced: Balances sound, temperature and performance • High Performance • Normal • Silent • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled Note: Each scheme affects fan sound, temperature, and performance. Set the speed of optical drive to the desired performance. Enable or disable the power saving feature that stop the microprocessor clock automatically when there are no system activities. Normally, it is not necessary to change the setting. Enable or disable a feature that automatically adjusts power management when there is no PCI Express activity. Normally, it is not necessary to change the setting. Enable or disable a feature that powers on the system when AC is attached. If you select "Enabled", the system is powered on when AC is attached. When the system is in hibernate state, the system resumes. If you select "Disabled", the system is not powered on Chapter 8. Advanced configuration 185

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Table 8. Config menu items (continued)
Intel SpeedStep
®
technology (Intel
SpeedStep mounted
models only)
Disabled
Enabled
Mode for AC
Maximum Performance
Battery Optimized
Mode for Battery
Maximum Performance
Battery Optimized
Select the mode of Intel
SpeedStep technology at
runtime.
Maximum Performance
:
Always highest speed
Battery Optimized
: Always
lowest speed
Disabled
: No runtime
support, lowest speed
Adaptive Thermal
Management
Scheme for AC
Maximize Performance
Balanced
Scheme for Battery
Maximize Performance
Balanced
This select a thermal
management scheme to
use.
Maximize Performance
:
Reduces CPU throttling
Balanced
: Balances
sound, temperature and
performance
Note:
Each scheme affects
fan sound, temperature,
and performance.
Optical Drive Speed
High Performance
Normal
Silent
Set the speed of optical
drive to the desired
performance.
CPU Power Management
Disabled
Enabled
Enable or disable the power
saving feature that stop
the microprocessor clock
automatically when there
are no system activities.
Normally, it is not necessary
to change the setting.
PCI Express Power
Management
Disabled
Enabled
Enable or disable a feature
that automatically adjusts
power management when
there is no PCI Express
activity. Normally, it is not
necessary to change the
setting.
Power
Power On with AC Attach
Disabled
Enabled
Enable or disable a feature
that powers on the system
when AC is attached.
If you select “Enabled”, the
system is powered on when
AC is attached. When the
system is in hibernate state,
the system resumes.
If you select “Disabled”, the
system is not powered on
Chapter 8
.
Advanced configuration
185