HP Compaq Presario,Presario 80XL458 Supplementary Manual

Maximizing Battery Operating Time

The Presario 800 with Intel Pentium® III processor supports SpeedStep™
Technology. This technology supports two different modes of operation.
The default settings are:
Performance Mode—the processor runs at maximum speed if the notebook
is powered on while connected to an AC power source
Battery Optimized Mode—the processor runs at lower speed to maximize
battery operating time if the notebook is powered on with a battery source
To automatically change the processor settings when changing power sources
(from AC to battery or battery to AC) without rebooting the notebook, you
must install the SpeedStep™ application.
To install the application, follow these steps:
At the Windows desktop, press F1 or select Start, Help.
1.
Move the mouse pointer over the Selective Restore
2.
Click on the Intel SpeedStep icon.
3.
Click Yes to install the software.
4.
Re-Start your computer for the application to take effect.
5.
NOTE: SpeedStep is not supported on Intel Celeron processors.
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