The DPI of the mouse is the number of dots per inch, that is, the number of dots the pointer moves on the screen every inch the mouse moves. For example, if the mouse with 400DPI moves one inch, the pointer on the screen can move 400 points. In fact, the concept of DPI can't express the accuracy of the mouse more accurately and uniquely. For example, the number of dots per inch is not constant on the screen. It is affected by resolution and other factors, so it is not the only pixel on the screen. It is possible that this point is 4 pixels or 1 pixel. This is because the concept of DPI involves the change of display. At present, the more scientific and recognized new standard is to use CPI to express mouse accuracy. The explanation of this concept is: the number of mouse samples per inch. To be clear, it is how many points can be collected from the moving surface when the mouse moves one inch. This property is completely related to the performance of the mouse itself, and no longer involves the problem of the display. Therefore, the accuracy of the mouse can be reflected more accurately and will not change. However, at present, most mouse manufacturers have adapted to the name DPI. Therefore, at present, most production links continue the expression of DPI indicators. When we need the mouse to move a fixed distance on the screen, the physical distance of the mouse with high DPI will be shorter than that of the mouse with low DPI. The former can respond to smaller operations in the fastest time. This is very important in FPS games. In order to pursue the maximum stability when shooting, experts usually set the preset value of mouse speed to be quite low. When you need to turn around suddenly, 400DPI will use twice the physical displacement of 800CPI, so it is easy to miss the opportunity to kill the enemy in the first time. Maybe you have to ask, can't speeding up the mouse solve the problem? Yes, that's right. Although the physical moving distance is shortened, the positioning accuracy is lost. If the physical point where the mouse moves corresponds to the logical point on the screen, the physical point originally corresponds to the logical point. Under the influence of opening acceleration, the pointer will ignore some physical points in order to keep up with the moving speed of the mouse. So it becomes a physical point that may correspond to multiple logical points, and the accuracy naturally decreases. Therefore, the advantage of high DPI is that it can provide near-perfect accuracy at the same time of instantaneous acceleration, while the mouse with low DPI can't do this anyway. If you are an FPS player with high mouse requirements, it is necessary to choose a mouse with high DPI. If we have to define DPI as accuracy, the positioning accuracy of a mouse with a high DPI will definitely be higher than that of a mouse with a low DPI in fast movement. However, the DPI of the mouse is not static, and it will not keep the DPI index as high as 800 all the time. When the mouse moves slowly, the value of DPI will become very low. When the moving speed increases, the DPI value will also increase. In other words, CPI is directly proportional to the moving speed of the mouse. All this depends on the accurate judgment of the moving speed by the optical sensor. Therefore, the level of DPI is basically meaningless for the graphics field, but in the fierce FPS game, high DPI will undoubtedly bring you more chances of winning. At present, many mice have reached 1600DPI or even 2000DPI. Microsoft, Logitech, Razer and other brands have launched many high-DPI mice. I believe that these mice can make FPS players experience more game fun.
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