Mouse Polling Rate, Explained

Polling rate — also called report rate — is how often your mouse tells the computer where it is, measured in hertz. A 125 Hz mouse sends an update 125 times a second, or once every 8 milliseconds. A 1000 Hz mouse updates every 1 millisecond. Higher means the cursor position is fresher, which lowers input latency and smooths out fast movement.

Basic office mice usually run at 125 Hz. Gaming mice offer 500 and 1000 Hz, and a recent wave of models pushes to 4000 or even 8000 Hz. Polling rate is separate from DPI: DPI is how far the cursor moves per inch of hand movement (sensitivity), while polling rate is how frequently that movement is reported (timing).

Going from 125 Hz to 1000 Hz is a real, if subtle, improvement: the cursor feels a touch more connected and, in fast-paced games, aiming is marginally more consistent because position updates arrive between display frames rather than in lumps. Most players notice the jump from 125 to 500 or 1000; beyond that, the gains shrink fast.

The very high rates — 4000 and 8000 Hz — are a diminishing return for most people and carry a cost: they raise CPU usage, because the system has to process far more reports per second. On a mid-range PC an ultra-high rate can actually hurt performance. For the vast majority of users, 1000 Hz is the sweet spot.

A browser test estimates the rate by timing the gap between the reports it receives while you move the mouse. One caveat: browsers and your display's refresh rate can batch or cap those reports, so an in-browser reading sometimes lands below the mouse's rated figure. A good test reads coalesced pointer events to recover as many reports as the browser exposes.