2650 x 1440 is also called Quad HD(QHD) or Wide Quad HD (WQHD) or 1440p. It is a display resolution of 2560 x 1440 pixels in a 16:9 aspect ratio. Before moving on to more technical terms, let us understand some essential words, if you are not familiar with them.
The aspect ratio of any device is the ratio of its width to height. In simple terms, it is the ratio you get by dividing the width to height (for resolution 320×240 = 320/240 i.e., 4:3). The most commonly used aspect ratios are 16:9, 4:3, etc.
Its the number of pixels that a display device can show. Higher the resolution of the screen, the higher the no of pixels a device can display. Hence, it provides a large visible area and very crispier images. 2560 × 1440 means it can display 2560 pixels horizontally and 1440 pixels vertically.
Is 2650 x 1440 a 2K resolution or 2.5K?
Here K stands for the number of pixels a device can display in thousands. So, 2k stands for two thousand pixels. While QHD stands for Quad High definition, that is, it has four times as many pixels as HD (1280 x 720 or 720p).
It is also called WQHD because of its marketing purpose. It tells the full-screen format of the resolution. Technically it’s all unnecessary as all HD resolutions are wide, but its also helpful to differentiate from the resolution of 960 x 540, which is called qHD(small q and capital Q can be confusing sometimes, so WQHD).
As per Digital Cinema Initiatives, 2048 × 1080 is 2K resolution. While 2560 x 1440 has around 2.5K pixels and so it must be called 2.5K instead of a 2K resolution? Comment your views below.
Why is 2560 x 1440 important?
Standard-definition television (SDTV) system uses an aspect ratio of 4:3, and it’s not considered optimum for high definition television (HDTV) broadcast. So, 2560 x 1440 resolution with aspect ratio 16:9 is regarded by the ATSC in the late 1980s to become the standard HDTV format.
It has four times the width and three times the height of the VGA precisely. Because of practical technical constraints, they have chosen now the popular 16:9 formats with twice (HD) and thrice (1920 x 1080 or FHD) the VGA width instead.
Resolution represents the number of pixels shown by the device. The more your device supports, the crispier the images will appear. This clarity is delivered at the cost of higher battery consumption.
I hope this might help you in some way when you go out to purchase your new display device. If you have any suggestions regarding the improvement of this post, please let us know through the comment section below.