What are refresh rate and frame rate?

The refresh rate is the number of times a display’s image is repainted or refreshed per second. As it denotes a frequency of a process, the refresh rate is expressed in hertz. That is, a refresh rate of 75 Hz means the image is refreshed 75 times in one second. The most common fresh rates for today’s displays are 60Hz, 120Hz and 240Hz. The idea is that the more times the screen is “refreshed” every second, the smoother the image is in terms of motion rendering and flicker reduction. In other words, the image looks better the faster the screen can refresh itself.

Frame rate, or frame frequency, is the frequency (rate) at which an imaging device produces unique consecutive images called frames. Frame rate is most often expressed in frames per second (FPS), and is also expressed in progressive scan monitors as hertz (Hz). Usually, the frame rate is 25Hz, 30Hz, 50Hz and 60Hz. The more frequent an imaging device produces, the better the continuity of image will be.


Post time: Jul-10-2019
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