Your Laptop Screen Resolution Explained in Simple Words
VGA: Video Graphics Array
It refers to 640 x 480 resolution. VGA was not a specification of resolution, but a display standard of IBM computer. Many revisions of the standard were introduced. The most common was Super VGA (SVGA), which allows for resolutions greater than 640x480, such as 800x600 or even 1024x768.
XGA: Extended Graphics Array
It refers to 1024x 768 resolution. This is a kind of LCD screen widely used by laptops. About 70% of laptops in the market adopts XGA, which supports 1024 x 768 resolution. The screen size ranges among 12.1", 13.3", 14.1", 15.1", 15.6", 17" and 17.3".
It refers to 1280 x 720 resolution and is also called half HD or standard HD. It is the lowest standard in HD. It can be called HD video only when it reaches up to 720P resolution.
It refers to 1920 x 1080 resolution and also called full HD. 1080P is a kind of video format. P here means progressive scan, which is different from interlaced scan in 1080I. And the number 1080 indicates there are 1080 scan lines vertically.
It refers to 2560 x 1440 resolution with its screen horizontal pixel up to more than 2000 pixel. The domestic projector in theater mainly adopts this kind of resolution, as well as many high-end smartphone screen.
It refers to 4096 x 2160 resolution. According to the range of application, 4K resolution has various of variants, for example, 4096 x 3112 in Full Aperture 4K, 3656 x 2664 in Academy 4K, and 3840 x 2160 in UHDTV, which all belongs to 4K resolution. Sony Xperia 1 has the first 4K OLED mobile screen.
An 8K screen is 7680 x 4320 resolution, for a total of approximately 33 million pixels. The "K" in 8K stands for Kilo (1000), meaning a screen that has achieved a horizontal resolution of about 8,000 pixels.
8K TV is the highest resolution TV that has been released recently among UHD (ultra-high definition) TVs. With four times more pixels than a 4K TV—another type of UHD resolution—8K TVs show a sharper and more detailed picture quality. This is because in 8K TVs pixels are so small they cannot be distinguished even from close up, making highly detailed images a reality.(Samsung source)
To give you an idea at the time of purchase I classified screen resolution in three big groups:
- If resolution is 720p (pixels), it is good(HD)high definition
- If resolution is 1080p, it is excellent (FHD)full high definition
- If resolution is 2k, 4k or 8k, it is great (UHD)ultra high definition