HP Compaq Series Hardware And Software Manual page 41

Power
Different states may be used, depending on whether the notebook
is running on external or battery power. After a power scheme
has been set, no other intervention is required to control the
performance of your notebook processor. The following table
describes the processor performance on external and battery
power for the available power schemes.
Power Scheme
Home/Office Desk
Portable/Laptop
Presentation
Always On
Minimal Power
Management
Max Battery
2–16
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.
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.
Runs at the lowest
possible performance
state.
Always runs at the
highest performance
state.
Performance state is
determined based on
CPU demand.
Runs at the lowest
possible performance
state.
Hardware and Software Guide