Bit of a weird one here, but I'll try my best to explain.
I have a laptop (great start ) with dual screens (one is 15"- the laptop screen and one is 21" - the external screen). I was completely unaware until the other day whilst looking in a game to find out my main 15" screen was actually using hard drive graphics when in actual fact, I have a dedicated 1GB graphics card (or so I thought, at that point).
I did a little more investigation and found out that in actual fact that my monitors were using different graphics cards. My first, main 15" monitor was using Intel HD graphics whilst my 21" was using Nvidia dedicated graphics.
What I would like to do:
Bare with me, I understand this might be no easy task.
I would like it if I could use the dedicated graphics card on my main 15" laptop screen (as that is the one I play my games on) and use either graphics card on my second screen (I don't mind switching the graphics cards they use or if they both use dedicated).
This is a thing in the newer laptops.
They automatically switch to the nvidia graphics card when the graphics go beyond a certain level.
This extends battery life and saves power plus gives you full functionality for the dedicated video cards.
I really can't say if you can dedicate it to be used all the time, cos it won't be.
Although there might be a set of instructions in the drivers so as to specify which games use which card.
You can try that route and see if you manage.
But as far as I know, what you are asking for, was the main reason the company put in 2 dedicated GPUs, each for different purposes.