4K, or 4K ultra high definition (UHD), references the approximate horizontal resolution of 4,000 pixels on a screen. Although it's commonly referred to as 4K, the exact resolution is 3,840 x 2,160 pixels. This means a 4K television screen packs twice the pixels of a traditional 1080p into the same size screen. When you're looking at buying a new TV set you might see the resolution listed as 4K, Ultra HD or simply UHD, but they all mean the same thing. As UHD screens can obtain faster refresh rates, they'll be able to give the viewer sharper and crisper images.
As 4K steadily becomes the industry standard, a 4K TV will put you ahead of the game and keep your viewing experience on the cutting edge. Don't worry about your favorite classic movies or TV shows looking sub-par. Streaming services such as Netflix are releasing 4K streams of shows like House of Cards and Breaking Bad. Some older films are being remastered in 4K on Blu-ray, so your old favorites look even better. Even if what you're watching isn't available in 4K, a new 4K TV can upscale it to look as close to true UHD resolution as possible.
Benefits of a 4K/UHD TV