When it comes to TVs, 4K and Ultra HD (or UHD) are referring to the same resolution. Those TVs, along with Ultra HD Blu-ray, ...

In this case, the XG275D-4K is, as the model name implies, a 4K resolution (3840x2160) gaming monitor. At its native ...

In other words, how many pixels per inch depends on the size and resolution of the screen you ... display you're planning for is an 84-inch 4K (3840x2160) screen (52.45 PPI): Divide the width ...