APU...or Audio Processing Unit, that was the meaning originally for the nVidia Soundstorm in some of the nForce2's. Then everything went downhill(=cheap) on the integrated audio quality until recently when Intel announced the next gen 300 series chipsets with 2 or 4 core dedicated audio DSPs.
As for the current APUs, talk about a good idea going wrong. It was the main reason AMD bought ATI in 2006 promising future/vision/fusion and whatnot. My opinion then 11 years ago was that you can't combine a CPU and GPU together expecting to best everything out there. It will always be a compromise between the two main components' size and more importantly architecture. So an APU is only as good as the weakest part in it, see performance of AMD APUs' CPU or Intel CPUs' GPU. Even in the best case scenario so far, that is Core i7/Xeon+Iris Pro GT4e, the integrated graphics is only as good <at best> as the current entry level GT 1030 or RX 550.
'nuff with the rant. Voted for The Jigsaw Puzzle, good thing it doesn't need a manual to use it.