If your AMD card is older than your latest linux distro release it’s plug and play, no driver installation required
Wayland works pretty well on most desktop environments too

beware fresh released AMD cards in combination with long term release distros like Debian stable, you most likely will need the driver from the AMD website (not recommended)

the OLED version has a more efficient CPU and fan resulting in a quieter fan noise
if you only play with headphones or only play lesser graphical games like Slay the Spire or Brotato you probably barely would notice the difference though