Part 2
-The fan is made of glass fiber polybutylene terephthalate. The advantage of this material is that it is strong and its shape is minimally deformed by heat. The fan is designed with enough margin to avoid the failure of the main unit even in a very severe environment.
-Although the company does not disclose the nominal fan noise level, it can be said that "under normal usage and specification conditions, the fan is quieter than the early PlayStation 3 and PS4".
-The heat sink is made of aluminum, but the block in contact with the APU is made of copper and plated in silver. This is to prevent corrosion from liquid metal. As mentioned earlier, gallium-based liquid metals are highly corrosive to aluminum, but copper is said to be able to withstand that. However, according to the tests conducted by the PS5 development team, even copper is not completely resistant to the gallium-based metal used in this project, TIM, so they took measures to protect it with the silver plating.
-In addition to the temperature sensor inside the APU, PS5 has three temperature sensors on the main board to control the fan speed based on the internal temperature of the APU and the highest temperature of the three temperature sensors. These fan control parameters can also be updated via online updates.
2020年10月7日,SIEが公開した「PlayStation 5」の公式分解動画は大きな反響をもたらした。この中では,液体金属を採用した熱伝導材料など,初めて公開となるトピックがいくつかあった。今回は分解動画に登場したPS5のメカ設計を担当する鳳 康宏氏へのインタビューをもとに,より詳細な解説を行いたい。
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