I have a Lenovo ultralight with a 7730U mobile chip in it, which is a pretty mid cpu... happily plays minecraft at a full 60fps while using like 10W on the package. I can play Minecraft on battery for like 4 hours. It's nuts.
AMD does the right thing and uses their full graphics uArch CU's for the iGPU on a new die, instead of trying to cram some poorly designed iGPU inside the CPU package like Intel does.