gfxCardStatus is an unobtrusive menu bar app for OS X that allows MacBook Pro users to see which apps are affecting their battery life by using the more power-hungry graphics.
- OS X Lion (10.7) or newer
- 2008-2012, 15-17" dual-GPU MacBook Pro
what the menu bar icons mean:
i — you're using the integrated GPU.
d — you're using the higher-powered discrete GPU.
- Growl or Notification Center notifications when the GPU changes.
- The Dependencies list: open the gfxCardStatus menu when your discrete GPU is active to see what is turning it on.
- Manually switch to Integrated Only or Discrete Only mode to force one GPU on or the other.