I was tinkering about in the System Preferences of my Macbook Pro yesterday, when I came across "Automatic Graphic Switching" within the Energy Saver pane as exemplied below:
What exactly is Graphic Switching, and are there any reasons or instances when it shouldn't be automatically enabled & switched off ?
Best Answer
Graphics switching is where the integrated graphics is switched for the discrete graphics when more performance is required (and where performance is more important than battery life & heat output).
You can see the current graphics card that is enabled, and forcefully switch between the two, with gfxCardStatus.
When 'Automatic graphics switching' is disabled in the Energy Saver system preference pane, only the discrete graphics is used.