Hi forum, I am a new Apple user, switching after 17 years of painful Windows usage and support. I purchased the almost top of the line Retina MacBook Pro 15" with the Nvidia and the Intel Iris card. I had several issues with several applications consuming a lot of power so I installed a little app that lets me know when an app is using the Iris card and when it switches to the Nvidia card its called gfxCardStatus by the way. What I´ve noticed is that for example when using VLC player for example it triggers the Nvidia card on. And I would like to choose which applications can or can not trigger the usage of the Nvidia card. I find that reproducing a movie for example is not a graphics intensive tasks and should be properly handled without any trouble by the Iris card which I asume would consume less power and make my battery last longer. Then there are other applications like for example Devolo Cockpit that also triggered my Nvidia Card, and makes no sense at all because this is not even a graphics applications, so I reported them the problem assuming its a bug. The same strange behavior repeats for several applications. It would be cool to be able to define which applications can use the the Nvidia card and for the rest for them to use the embedded Iris card. Or at least be able to define that if you are on the road you want all applications to use Iris and if any application needs more power to ask you if you want to switch to Nvidia. My experience on my Windows desktop is that I was able to handle most of the applications with the embedded HD4000 intel graphics card I had on it without trouble. Thanks for your comments and advice.