I have 2 graphic card , how to switch them?

ILoVeGun

Honorable
Sep 17, 2013
8
0
10,510
I buy a laptop Samsung with AMD Radeon HD 8750M but when i look at device manager i saw that i have 2 grahpics crads , Intel HD graphics 4000.
I have some questions : Witch one is better ?
And how i activate the Radeon card,?
At device manager i Dezactivate the INTEL hd graphics 4000 , but when i was serching on SystemRequirementsLab i say that i still have INTEL HD graphics 4000, i cant open Catalyst say that i have another Video card, plz help.

I HAVE WINDOWS 8..