Edit: I guess this post is free advertising for these shitters, so I will describe what I previously linked.
There is this TV you can get for free but it has a ads on screen constantly and it has a camera pointed at you to record your reactions to ads and to ensure you don’t cover up the ad portion of the screen.
You need that “smart” stuff to make smaller resolutions look good on a 4k TV.
Upscaling takes processing power, so adding in the smart functions doesn’t really need anything else.
Without the upscaling, it’s often a waste to buy a 4k TV because very few sources are in 4k. You’d be getting the same picture quality as 1080
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