The news that comes from Eurogamer via the Japanese game site 4Gamer.netis based on an interview with Yasuhiro Ootori, the vice president of mechanical design at Sony.
The PS5 has a temperature sensor inside its Accelerated Processing Unit (APU) and three located on the main board.
The PS5 cooling fan is quite large as seen from the dissection of the console system, but Otori insisted that it will be really quiet when it runs. "In the future, different games will be published and data will be collected on the behavior of the APU in each game". It is a 120mm-wide and 45mm-thick cooling fan and is said to be the key reasons for the console's chunky design. This will be adjusted in future updates depending on the game being played on it.
The PS5 has a double-sided air intake fan and internal sensor temperatures in the APU and on the motherboard that control the fan speed.
Alongside changes to Party and Messages, the 8.00 firmware update also brought changes to parental controls, and minor quality of life features like support for third-party authenticator apps for 2-step verification.