RedKingXIII on 10 May 2024
I remember reading somewhere that the Switch OS uses 750MB of RAM to run. Another 96MB is taken by the system if a game uses the recording feature. I searched about it today and aparently the source of this information is a leaked document for developers that I couldn't find, so yeah, take this information with a huge grain of salt.
I don't think this number is false however, it's less RAM than what the Wii U used but there's a lot less going on in the Switch OS. I also don't think they will reserve 4GB for the OS, it's probably going to be something like 1-2GB.
