HP Compaq NW8000 Software Manual page 29

Accessing XP Processor Controls
To access Windows XP processor performance controls, select
Start > Control Panel > Performance and Maintenance > Power
Options > Power Schemes tab.
The power scheme you select determines how the processor
performs when the notebook is connected to external power or
running on battery power. Each power scheme for external power
or battery power sets a specific processor state.
Different states may be used, depending on whether the notebook
is running on external or battery power. Once a power scheme has
been set, no other intervention is required to control the
performance of your notebook processor.
Power Scheme
Home/Office Desk
Portable/Laptop
Presentation
Software Guide
Processor
Performance while
on External Power
Always runs at the
highest performance
state.
Performance state is
determined based on
CPU demand.
Performance state is
determined based on
CPU demand.
Processor
Performance while
on Battery Power
Performance state is
determined based on
CPU demand.
Performance state is
determined based on
CPU demand.
Starts at lowest
performance state,
then uses linear
performance reduction
(stop-clock throttling)
as the battery
discharges.
(Continued)
Power
2–17