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

The TV shows you the picture it was sent as a string of 0s and 1s encoding almost directly which pixel on the screen gets what color.

The PC/GPU gets told something akin to “there’s a tree with 921368 leaves on the left, below it a couple is having a picnic, the sun on the right top is out but there are a few clouds around, a small family of 4 is having a stroll with their yorkshire terrier on a leash, and grass is everywhere else. Draw that, you have 1/60-th of a second. And don’t forget the shadows!”