What is monitor refresh rate

The refresh rate of a monitor refers to the number of times the electron beam scans the image on the screen repeatedly, which is the number of times the screen is refreshed per second. The refresh rate is divided into vertical refresh rate and horizontal refresh rate. The generally mentioned refresh rate usually refers to the vertical refresh rate; the vertical refresh rate indicates how many times the screen image is redrawn per second, that is, the number of screen refreshes per second. The unit is Hz (hertz).

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The refresh rate of a monitor refers to the number of times the electron beam scans the image on the screen repeatedly. It can be understood this way: the refresh rate is the number of times the screen is refreshed per second.

When watching a movie, what we see is actually a series of still pictures, just like a slide show. Why do we feel that the pictures are moving? It is because human eyes have a visual dwell effect. The previous picture The impression of the picture left in the brain has not disappeared, and the next picture follows immediately, and the difference between the two pictures is very small. An action requires many pictures to display, so that we feel that the picture is moving. , the changing of pictures one by one is refreshing. Assuming that an action is completed with 20 pictures, we will look a bit like a cartoon. If the action is increased to 30 pictures, it will look much more natural. This is refresh rate.

#The higher the refresh rate, the better the stability of the displayed image (screen). The refresh rate will directly determine its price, but since the refresh rate and resolution are mutually restrictive, only a monitor with a high refresh rate at high resolution can be called excellent performance.

Note that although its calculation unit and vertical scanning frequency are both Hz, these are two completely different concepts. The 75Hz screen refresh rate is the most basic standard set by VESA for flicker-free. The 75Hz here should be a standard that can be achieved in all display modes.

Refresh rate category

The refresh rate is divided into vertical refresh rate and horizontal refresh rate. The generally mentioned refresh rate usually refers to the vertical refresh rate. The vertical refresh rate indicates how many times the screen's image is redrawn per second, that is, the number of screen refreshes per second, measured in Hz (Hertz).

The higher the refresh rate, the better, the more stable the image, the more natural and clear the image display, and the less impact on the eyes. The lower the refresh rate, the more the image will flicker and jitter, and the faster your eyes will tire. Generally speaking, if a refresh rate of 80Hz or above can be achieved, image flicker and jitter can be completely eliminated, and the eyes will not tire easily.

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