Sony PCG-FX300 Quick Start Manual page 59

Troubleshooting Your Notebook
The sound of my notebook's fan is too loud.
Use the PowerPanel™ utility to change the Thermal Control Strategy setting to
Quiet. This setting slows down the CPU speed. See PowerPanel Help for more
information.
Why does the System Properties dialog box display a slower
CPU speed than advertised?
This is normal. Because your computer's CPU utilizes a type of CPU speed
controlling technology, System Properties may display the CPU's current speed
instead of the maximum advertised speed.
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