globalisateur on 07 November 2013
So the APU and 8 GDDR5 chips are cooled actively by a 85 mm fan at one side while the APU and the 8 others memory chips are passively cooled at the other side of the motherboard. I knew it!
You can clearly see thermal paste on the metallic plate (attached by 2 screws) on the passive side of the board.
Video of the teardown btw to be added on the OP:
http://www.wired.com/gamelife/2013/11/playstation4-teardown-video/
