http://forum.beyond3d.com/showpost.php?p=1817281&postcount=4018
This guy ERP worked on PS4 (but he subsequently quit Sony and no longer works there) and he said (in response to talk of a secret chip):
I think the bulk of what's there has been disclosed.
I will say that at least at release the CPU and GPU "reservation" for the OS on PS4 was close to the rumored XBOne reservation. Though the GPU reservation is soft rather than hard.
Voice recognition is or at least was all software running on the main CPU. There is video encoding hardware, there is a compression engine, there is encryption hardware, there is an Arm processor that is intended to be used for low power operation, there is audio hardware, but it's not as extensive as the descriptions of the XBOne audio block.
The intent was that none that hardware is directly available to the app. Though I think exceptions were made for the decompression hardware.
I might have missed something, but there really isn't anything very exciting.
In terms of physical packaging I have no idea, I've only ever looked at block diagrams.
He doesn't comment on PS4 RAM reservation but it's similar to Xbox One as well according to DF articles in the past etc (3+GB)
So much for all those people that claimed Xbox One had 10% GPU reservation and PS4 had zero. And actual Sony hardware engineer says they are similar (not at all surprising to people with common sense).
