This always bugs me about the “it runs Doom” posts. 90% of the time it’s just a unique display hooked up to a regular computer where the computer is the thing running Doom or they made some simple raycast game with Doom assets (like all the calculator ones) or they just jammed a raspberry pi in something.
I’m sure this display will show Cyberpunk 2077 if they piped the display in properly. Doesn’t mean e.coli are running a 4080.