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

TV is playing back an already rendered and exported video file. A GPU is actually rendering (generating) the pixels. This takes a lot more power to do. Once the gpu renders something, you can capture it into a video file and play it back on anything for much less processing power.