AMD FX 6300 does not have an APU.
AMD A8 6600K has a weak APU.
APU just meant integrated graphics.
Integrated graphics is 99% always weaker than an actual graphics card such as a Geforce 750.
Intel has integrated graphics in its CPU as well, Intel HD Graphics 4600 and 4400.
Both the AMD and Intel will make most games playable at lowest settings, but that is about it.