Yep, any displays you plug into the motherboard will use your CPU graphics card (assuming it has one). I of course wouldn’t plug any of the main game monitors into it, but it’s perfect (in my opinion) for pop out panels as it should have enough horsepower to run those. Now, I have no idea if that begins limiting your CPU or not, maybe someone with more knowledgable can chime in.
I’ve noticed, after hooking up my 3 monitors and 4 instrument panel displays, that my computer continues to be limited by main CPU thread. Once I utilize the MSFS multi-view/render window function on my 3 main displays, and then pop out all my panels, I drop to about 28-32fps. Now, it is a SMOOTH 28-32fps so I’m happy with it, but performance monitoring is not showing my GPU as being the bottleneck, it is (as usual) the main CPU thread. If they can ever fix that issue all would be right with the world 