4K resolution is not 2560×1440.
4K resolution refers to a display resolution of 3840×2160 pixels, which is also known as Ultra High Definition (UHD) or 2160p. It is called 4K because it has approximately 4000 pixels horizontally.
On the other hand, 2560×1440 resolution, also known as Quad HD (QHD) or 1440p, is a step below 4K resolution. It offers a pixel count of 2560 pixels horizontally and 1440 pixels vertically.
While both 4K and 1440p resolutions provide higher pixel densities compared to the standard 1080p resolution, they are distinct resolutions with different pixel counts and aspect ratios.
4K resolution is commonly used in high-end TVs, computer monitors, and digital cinema projection, offering incredibly sharp and detailed visuals. It has become increasingly popular in recent years, especially with the availability of more affordable 4K displays.
On the other hand, 1440p resolution is often used in gaming monitors and high-end computer displays, providing a balance between sharpness and performance. It offers a noticeable improvement over 1080p resolution, but it is not as demanding on graphics hardware as 4K resolution.
It’s worth noting that there is a 2560×1600 resolution, which is also a step below 4K but offers slightly more vertical pixels compared to 1440p. This resolution is commonly found in some computer monitors and provides an even higher pixel density than 1440p.
4K resolution refers to 3840×2160 pixels, while 2560×1440 resolution is categorized as Quad HD or 1440p. They are distinct resolutions with different pixel counts and are used in different display devices for various purposes.