eli5 Why does GPU heats and use fan to cooldown while processing 8k video on PC and there is no single fan in a TV and still process 8k/4k videos?

Question

In short, why does the the TV doesn’t need a fan to cooldown and PC requires one while dealing with high definition videos?

In: 1359

Answer 1

OP used “process” in an unfortunate attempt to mean play, now everyone is talking about rendering.