Toshiba TECRA A4 User Manual page 146

CPU
Dynamic CPU Frequency Mode
This option lets you choose from the following settings:
Dynamically Switchable
Always High
Always Low
CPU power consumption and clock speed
automatic switching function is enabled.
When the computer is in use, CPU operation
is automatically switched when necessary.
(Default)
CPU power consumption and clock speed
automatic switching function is disabled. The
CPU always runs at its fastest speed.
CPU power consumption and clock speed
automatic switching function is disabled. The
CPU always runs at low power consumption
and low speed.
HW Setup
7-5