PS5 teardown in depth(Japanese)
https://www.4gamer.net/games/990/G999027/20201016035/
Some intesting point
-Sony used latest CAE technology to design the airflow inside PS5
-Chimney effect is at the measurement error level
-SSD slot can accept <8mm tall heatsink
-2 exhaust holes are provided for SSD slot, take the heat away by negative pressure
-not recommended to use heatsink that are high enough to touch the metal cover
Also ps5 DE is 0.95 x the volume of XSX (smaller but different shape.). Ps5 disk is 5 % bigger by volume.