Sony PCG-GR390K - Manual (Page 87)

Controlling Power Management
87
❑ Select one of the following modes:
Icon Mode Description
Maximum performance
The Maximum performance mode sets the CPU’s clock speed to its
maximum speed at all times.
Auto performance
In Auto performance mode, the CPU clock speed changes
automatically, depending on usage.
Battery optimized
The Battery optimized mode reduces the CPU clock speed and battery
voltage to conserve power when the notebook is operating on battery
power.