Mouse Polling Rate Explained
Your mouse’s polling rate is how often it reports to your computer. It is measured in hertz (Hz), meaning reports per second, and it is one of the most misunderstood gaming mouse settings. This guide explains what polling rate is, how it affects input delay and smoothness, and which setting makes sense for you.
To see the rate your mouse is actually using, run the Mouse Polling Rate Test.
What polling rate means
A mouse does not send a continuous stream of movement. It collects movement and button changes, then sends them to the computer in small reports. The polling rate is how many of those reports it can send each second.
Time between reports (ms) = 1000 / polling rate (Hz)
| Polling rate | Time between reports |
|---|---|
| 125 Hz | 8 ms |
| 250 Hz | 4 ms |
| 500 Hz | 2 ms |
| 1000 Hz | 1 ms |
| 2000 Hz | 0.5 ms |
| 4000 Hz | 0.25 ms |
| 8000 Hz | 0.125 ms |
How polling rate affects input delay
Anything you do with the mouse has to wait for the next report before the computer knows about it. At 125 Hz that wait can be up to 8 ms, and about 4 ms on average. At 1000 Hz it is at most 1 ms, and about half a millisecond on average.
So going from 125 Hz to 1000 Hz removes several milliseconds of delay, which many players can feel. Going from 1000 Hz to 8000 Hz removes less than one more millisecond. That can still help on very high refresh rate monitors, but the improvement is much smaller.
Polling rate is only one part of the total delay. The game, the monitor, the graphics card and your own reaction time all add far more. To see how fast you react, try the Reaction Time Test.
How polling rate affects smoothness
More reports per second means the cursor or camera position is updated in smaller steps. On a high refresh rate monitor, a low polling rate can make movement look slightly uneven, because some frames get a new mouse position and others do not. A rate at or above your monitor’s refresh rate avoids most of this.
Downsides of very high polling rates
- More processor work. Every report has to be handled by the computer. Rates of 4000 Hz and 8000 Hz can use noticeably more processor time, and on some systems or games they cause stutter.
- Battery life. Wireless mice use more power at high rates, so many lower the rate in power saving modes.
- Compatibility. Some older games and software handle very high rates poorly.
If you notice stutter after raising your polling rate, lowering it to 1000 Hz is a sensible first fix.
Which polling rate should you use?
- Office work and browsing: any rate works. 125 Hz is fine.
- Gaming: 1000 Hz is the long standing standard and a good choice for almost everyone.
- Competitive play on a high refresh rate monitor: try 2000 Hz or 4000 Hz if your mouse supports it, and check that your games stay smooth.
Polling rate is not DPI
People often mix up polling rate and DPI. Polling rate is how often the mouse reports. DPI is how far the cursor moves for each inch of mouse movement. Changing the polling rate does not change your sensitivity. For sensitivity, see eDPI Explained or measure your DPI with the Mouse DPI Analyzer.
Frequently asked questions
How do I change my polling rate?
Most gaming mice let you change it in the manufacturer’s software, and some have a button on the underside. Basic office mice usually have a fixed rate.
Why does a polling rate test show less than my setting?
Browsers are not precise measuring tools, and most mice only send reports while they move. Move the mouse quickly and continuously during the test, and expect a slightly lower reading at 4000 Hz or 8000 Hz.
Does polling rate affect clicks per second?
Not in a way you would notice. Even 125 Hz sends a report every 8 ms, far faster than anyone can click. Your CPS depends on your fingers, not on the polling rate.
Is 8000 Hz worth it?
It can make movement slightly smoother on very high refresh rate monitors, but the delay saved over 1000 Hz is under one millisecond and it uses more processor time. Try it and keep it only if your games stay smooth.