I just noticed where the difference is, and I'm still very confused.
Turns out when the computer is plugged in, you have two options:
- Better Battery Life
- Higher Performance
When the computer is unplugged it shows:
- Automatic switching...
Which is fine, I just don't understand why the option for "Better Battery Life" exists when you are plugged into the wall... Furthermore I don't understand the difference between the two separate settings menus, or why the menu changes depending on power status...