Quite simply, this refers to a specific screen resolution — 3840 x 2160 — which is four times (hence the “4”) the amount of pixels you’d find on a non-4K display. 4K Ultra HD is the name ...

The most important thing to know about Full HD screens is that they pack a resolution of 1,920 x 1,080 pixels. So far, so simple. Next comes 4K, also known as Ultra High-Definition ... a handful of 8K ...