Version: 2.3 || Release Date: 2012-09-24 || License: Freeware Developer: Cody Krieger | App Owner: rimousqui

gfxCardStatus is a free menu bar application that keeps track of which graphics card your MacBook Pro is using at any given time.

Simple, clean "i" and "n" icons that signify Intel® HD Graphics, and NVIDIA® GeForce GT 330M graphics, respectively
Automatically updates when the GPU switches, in real time
Manual update, if you like to make sure yourself
Growl support - so you know right when the GPU switches
Tiny footprint - doesn't sit in your menu bar and hog RAM or CPU cycles
Automatic application updating - checks for, downloads and installs new versions of gfxCardStatus automatically!

Note: only for 2010 MacBook Pros with Intel® Core i5/i7 processors and the NVIDIA® GeForce GT 330M GPU.

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3 Opinions

I'm running the 2.0 version, and it is really useful! I've already found two "misbehaving" apps: uTorrent and HyperDock. Clean and simple menubar functionality like this really should have been included by Apple. Thanks Cody Krieger for providing a fix!

The recent update that give ability to force which GPU is in use is AWESOME! This sort of visibility and control should have been provided out of the box by Apple. Fortunately, we have awesome apps like this.

Great app, does exactly what it's supposed to do
Seems like the switch GPUs feature is still experimental (at least the app tells you so) but it works like a charm for me.