eli5 if my monitor is 1080p why does 4k look better than 1080p videos?

Question

shouldn’t 1080p and 4k have no difference if my monitor is only capable of displaying 1080p

In: 422

Answer 1

Super sampling is when you render something at a high resolution and then use an algorithm to reduce the resolution down. You tend to get a nicer picture when you super sample because your anti aliasing is better, smoothing out jagged lines by using the extra data to pick a color that is a combination of the colors around it.