這部分我認為有點疑慮，主機系統還有可能塞進512MB
遊戲主程式應該不可能，太小了

根據維基的資料：
512 MB DDR4 RAM (for background tasks)[3]
https://en.wikipedia.org/wiki/PlayStation_5

不過註3給的ifixit連結我沒有找到for background tasks的說明
https://zh.ifixit.com/Guide/PlaySta...E8%A7%A3/138280

在twitter的留言也很多人分析猜測這512MB的用途
https://twitter.com/liquidtitan/sta...924775335895042

這篇則是說該512MB用於後台任務
https://careergamers.com/what-ram-does-the-ps5-have/

The other pool of RAM is 512 MB DDR4 SDRAM Memory manufactured by SK Hynix.
This RAM is mainly used by the OS for background tasks.

而且更明確的說明其使用理由

512 MB DDR4 SDRAM
This RAM has been installed in the PS5 mainly to handle all the background tasks.
Sony has installed the 512 MB DDR4 SDRAM for low-performance tasks due to its efficient power savings,
performance enhancement capabilities, and because it is much cheaper than GDDR6 RAM.

此 RAM 已安裝在 PS5 中，主要用於處理所有後台任務。
索尼為低性能任務安裝了 512 MB DDR4 SDRAM，
因為它具有高效的節能、性能增強功能，並且比 GDDR6 RAM 便宜得多。