AMD states that PS4 doesn't even support hUMA. So what the hell is this thread all about.
Implying that the PS4 chip is a Kaveri chip is "erroneous", not that PS4 has hUMA. In fact, it is certain that it has hUMA, since the layout of the Onion/Garlic bus as well as the "voltatile tag" Cerny talked about are pretty much that: hUMA.