Source: Samuel Tolbert / Android Central
The PlayStation 5 has an 825GB internal SSD, but with the best PS5 games taking up over 100GB of size, you will need to add extra storage at some point. The PS5 has slots for NMVe SSDs, but at this moment, Sony hasn t enabled the feature yet, so you will have to rely on external drives to boost the storage of your PS5.
An external drive lets you seamlessly store your PS5 and PS4 games so that you can free up storage on the console itself. Note that while you can play PS4 games stored on an external drive, that ability is not available for PS5 games. If you move a PS5 game to an external drive, you will need to transfer it back to the console s internal SSD to be able to play that game.