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
A lot of the answers are just plain wrong. Here’s a simplest answer. GPUs need to be able to play 1,000 different games. TVs need to be able to only play 1 game.
Let’s expand on that…
* GPUs need to be able to play 1,000 different *3D* games.
* TVs only need to be able to play a single *2D* game.
Just having to do 3D math over 2D math increases the processing requirements exponentially.
* GPUs need to be able to play 1,000 3D games at any frame rate.
* TVs need to be able to play 1 2D game at a fixed 60 frames per second.
Life is so easy for a TV…
* GPUs need to play 1,000 3D games at any frame rate, and at any resolution.
* TVs need to play 1 2D game at 60 frames per second, and at a single fixed resolution.
A TV really isn’t going to break a sweat with the work it has to do.
* GPUs need to be able to play 1,000 3D games at any frame rate, at any resolution, and it needs continuously switch gears based on the user input.
* TVs need to play 1 2D game at 60 frames per second, and at a single resolution, but it only has 1 or maybe 2 gears which are not changed as frequently if at all.
So everything a TV needs to do is fixed, limited, and well known beforehand. When you have a fixed input and fixed output it is very easy to optimize it and bake it into the hardware. That is what is called hardware acceleration. The video and audio decoders are literally etched into the processor chip of the TV. GPUs on the other hand have no fixed input or output so it has to calculate a billion different things every second so it needs to be as beefy as possible.
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