External monitor gsync on aorus x7 pro? Other 970m laptops?

I'm looking to buy a monitor to hook up to my aorus x7 pro and I would like gsync. I know the jerks over at aorus just released a aorus x7 sync that enables this feature on the built in monitor, but alas I don't have that version. So I'm wondering if I can have gsync via an external display?

Thanks!

What GPU is in yours?