l’m not sure this is very well known fact but early Playstation 1 console models had more issues with color banding that later ones, they HW patched in the later PS1 revisions so some games would look different depending on where you played it.
@djlink That's a cool screenshot to see. I've been looking through the design of the system recently, looks like it relates to the 8-bit colour depth converted to 5-bit earlier on in the processing steps. No$PSX-SPX docs GPU Versions.
