I doubt it has a dedicated GPU, most laptops if they use one of those APU things, consider AMD graphics "good enough" and for some less demanding games they probably are... But if you have something like a desktop with a GTX 980 or something you can tell the difference by a mile. Even when a game runs well enough on those APU's they just feel slow.
I hope these new Ryzen APU's will be better.... Not that I will buy one, I just know eventually someone will dump one on me and me being me can't resist computers of any sort.