Prevent Discrete GPU in 2011 Macbook Pro from Killing Battery?

[Whitelightning]

How to prevent discrete GPU from killing battery? I know theres an app called gfxCardStatus, but it looks like it is only for machines with two cores. Is there some way to force the computer to use the Intel Integrated Graphics?

Is there a way to disable the radeon in Windows bootcamp as well?

 

[baxnet]

In Energy Saver Preferences, check the box that says "Automated graphics switching". It will only use the discrete GPU when necessary with this option selected.

 

[kobyh15]

I read on Anandtech that there is a new version of gfxCardStatus that supports the new Macbook Pros. As far as Windows, I have no idea.