Intel HD4000 and Amd graphics chip

[Arthas Chill]

Hello.
I have a small question.

I own a HP ProBook 4540s.
It has i5 processor with intel HD 4000 graphics and a AMD graphics chip. (HD7650M i think)

If I launch a game which one will be used to render it?
Intel's integrated HD graphics or AMD's dedicated gpu chip?

 

[legokill101]

should always be discrete

 

[Arthas Chill]

should always be discrete

Just did a benchmark on Mafia II.
Both Intel's and AMD's drivers are installed.
On benchmark it says that HD4000 is rendering it.
Not AMD's HD7650M. How do I change that?