Please, how can I change GPU for rendering? I have in my notebook Intel HD Graphics 4000 and GeForce 650M, and after update driver is used Intel HD Graphics 4000...
That's a driver and/or OS issue. There's no way to specify the GPU to use in the engine.
This is easily set in nvidia control panel. And also specific settings for each application.
http://i.stack.imgur.com/2GSLl.png (http://i.stack.imgur.com/2GSLl.png)