4K laptop are basically the same as the regular laptops except that instead of a screen with 480p SD,720p HE or 1080p full HD resolution they offer you a full 4K ultra HD Resolution at
3840 X 2160 pixel.
Full High Definition 1920×1080
4K Ultra High Definition 3480×2160
8K Ultra High Definition 7680×4320
The 4K laptop screen is called by 4K because K refers to thousand i.e. 4K screens will have approximately 4000 pixels from left to right in each row. 82,94,400 / 20,73,600 is 4 i.e 4K screens has 4 times as many pixels than Full HD screens,This increase in pixels produces a superior picture and makes it possible to increase the size of a display without losing image clarity.
If we keep the resolution of 4K laptop in mind ie. its crazy, deeply detailed resolution 4K laptops differ from their regular counterparts in that they’re also more powerfully beefed up with heavy duty processing and GPU specs designed to handle all of the extra graphics created by their 4K screen.
In these days, a surprisingly large selection of 4K laptop models from many different brands are available on the market and while they’re more expensive than their ordinary versions, they are surprisingly affordable and getting cheaper in every few months.