4K, also known as 2160p and UHD, is a popular display resolution. Resolution explains how many pixels a display has in width x height format. The more pixels a screen has, the sharper its image should look. The Digital Cinema Initiatives (DCI), a group of motion picture studios that creates standards for digital cinema, defines 4K resolution as 4096 x 2160 (opens in new tab)but this resolution is rare in consumer products. You'll usually see PC monitors, laptops and TVs labeled as 4K have a 3840 x 2160 resolution. However, this resolution is officially considered Ultra HD (UHD). You'll often see displays labeled as 4K/UHD.
Most modern GPUs (opens in new tab)support 4K/UHD output, though you'll need a reasonably powerful graphics card (opens in new tab) to play games at this resolution. For this reason, many gamers prefer running games at 1080p (opens in new tab)resolution (1920 x 1080).
