This, however, won’t guarantee flawless response time performance, which needs to be properly optimized via the monitor’s overdrive implementation.Ī good overdrive implementation will ensure that the pixels change fast enough, but it will also prevent inverse ghosting (i.e. Generally, if you want to avoid ghosting, you should look for gaming monitors with a specified response time speed of 1ms GtG (Gray to Gray) – or lower. Pixels take longer to change from black to white than vice versa, so even if all white to black pixel transitions are below the quoted 4ms on a 144Hz monitor, for instance, some dark to light pixel transitions still might take over 10ms.Ĭonsequently, you would get noticeable black smearing in fast-paced scenes with a lot of dark pixels involved, while in other scenes, ghosting wouldn’t be as noticeable. Now, the specified pixel response time speed that monitor manufacturers quote (such as 1ms GtG, 4ms GtG, etc.) refers to the display’s fastest pixel transition possible from one shade of gray to another under certain testing conditions – it’s not the average speed. So, if a pixel takes longer than 16.67ms to change from one color to another on a 60Hz display, you will notice ghosting behind fast-moving objects.įor a 144Hz monitor, response time needs to be lower than 6.94ms, for a 240Hz monitor, lower than 4.16ms, etc. Just how fast the response time speed needs to be depends on the monitor’s maximum refresh rate.Ī 60Hz monitor, for instance, refreshes the image 60 times per second (16.67 milliseconds in-between refreshes). Response TimeĪ quick pixel response time speed is needed to eliminate ghosting (trailing) behind fast-moving objects in fast-paced games. Response time, on the other hand, is the time pixels take to change from one color to another. To clarify, input lag is the delay between the screen and your commands, such as a press on the keyboard or mouse. Many people mistake response time for input lag when looking at the display’s specifications. Luckily, most new gaming displays offer both low input lag and quick response time, so you won’t have to compromise. While both input lag and response time are equally important for a fluid gaming experience, too high input lag can make competitive gaming unbearable.

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