Polling Rate Test — What Hz Is Your Mouse Actually Running?

A computer mouse does not continuously stream its position. Instead, it samples its sensor at a fixed rate and reports each sample to the computer as a USB interrupt transfer. The frequency of these reports is the polling rate, measured in Hertz. A 1000 Hz mouse reports 1000 times per second — every 1 millisecond. The computer's USB controller receives each report, sends it to the OS, and the OS moves the cursor accordingly. The whole chain takes a fraction of a millisecond on a modern system.

Why does this matter for gaming? Because input lag is the sum of every delay in the chain: mouse sensor, mouse MCU, USB polling, OS processing, game engine, GPU rendering, display refresh. At 125 Hz polling, the mouse alone contributes 4-8 ms of average input lag. At 1000 Hz, that drops to 0.5-1 ms. At 8000 Hz, it drops further to 0.06-0.13 ms. The reduction is small in absolute terms, but it is the cheapest input lag reduction available — you do not need new hardware, just a setting change.

Common polling rates and what they feel like

How to change your mouse polling rate

Most gaming mice default to 1000 Hz. To change the polling rate, you usually need the manufacturer's configuration software — Razer Synapse for Razer mice, Logitech G HUB for Logitech, SteelSeries GG for SteelSeries, and so on. Some mice have a hardware button on the bottom that cycles through preset polling rates; check your manual.

On Linux, polling rate can be changed at the kernel level with the usbhid.mousepoll boot parameter. Set it to 0 to use the mouse's default rate, or to a specific interval in milliseconds (1 for 1000 Hz, 0.5 for 2000 Hz). Note that not all USB controllers support sub-millisecond polling.

Why polling rate above 1000 Hz is controversial

Since 2022, several manufacturers have released mice with 4000 Hz and 8000 Hz polling. The marketing claims are impressive — sub-millisecond input lag, smoother cursor movement, more responsive aim. The reality is more nuanced:

• The benefit requires a high-refresh monitor. On a 60 Hz monitor, the difference between 1000 Hz and 8000 Hz is unmeasurable in feel. You need at least 240 Hz to perceive any difference.
• CPU usage increases. Each mouse report triggers an interrupt. 8000 Hz means 8000 interrupts per second per mouse, which on older CPUs can cause stuttering.
• USB controller congestion is real. If your mouse and keyboard share a USB controller, 8000 Hz polling can cause dropped reports from the keyboard.
• The actual input lag improvement is tiny. Going from 1000 Hz to 8000 Hz saves 0.44 ms of average input lag. Even top esports players struggle to perceive improvements below 1 ms.

The conclusion: 1000 Hz is enough for 99% of gamers. Higher rates are interesting technology but offer minimal practical benefit unless you are playing at the top level on a 360 Hz+ monitor.

Frequently asked questions