DPI (dots per inch) is how many cursor pixels the sensor reports per inch of mouse movement. Higher DPI means the cursor travels farther for the same hand motion. Most FPS players run a low DPI (400–800) for steadier recoil control.

What Is DPI? Mouse DPI Explained for FPS Players

Key takeaways

DPI is a hardware setting — it stays the same across games; only in-game sensitivity changes.
Pros almost all run 400–800: stable, no jitter, easy muscle memory.
DPI is not sensitivity — compare setups by eDPI, not DPI.

What DPI actually measures

DPI stands for dots per inch. In a mouse it is the number of sensor counts the device reports for every inch of physical movement. A 400 DPI sensor reports 400 counts per inch; an 800 DPI sensor reports 800. Double the DPI and the cursor travels twice as far for the same hand motion.

It is a hardware setting, set on the mouse itself (or its driver), and it is the same in every game until you change it. In-game sensitivity is the second half of the equation and lives inside each game.

Why almost every pro runs 400–800

Among tracked competitive players, roughly 90% of several hundred VALORANT pros use 400 or 800 DPI, and almost none run above 1600. CS2 players average an eDPI around 858, which at 800 DPI means a game sensitivity near 1.07. The spread is tight on purpose.

Three reasons stack up. First, modern sensors (e.g. PixArt PAW3395) have a native resolution window; 400 and 800 sit well inside it, so there is no firmware interpolation. Push to 32000 CPI and tracking deviation climbs to about 2.1% with visible micro-jitter, versus under 0.5% at 1600. Second, at very high DPI each count maps to less than a mousepad-fibre width, so the sensor starts reading surface texture as movement and the cursor twitches when you are not even touching it. Third, a low, consistent DPI is far easier to build stable muscle memory on.

90%

of tracked pros on 400 or 800 DPI

DPI is not the same as sensitivity

A common mix-up: people say "I use 800 DPI" as if that alone describes their aim speed. It does not. The real speed is DPI multiplied by in-game sensitivity — the number called eDPI. Two players can both run 800 DPI and feel completely different because their game sens differs. If you want to compare setups or move between games, you compare eDPI, not DPI.

How to choose your DPI

Start at 400 or 800 — the zone pros trust. Raise it only if, at your normal sensitivity, you find yourself running out of desk space on big turns. Lower it only if you cannot hold fine adjustments steady. Do not chase a "perfect" DPI number; pick one, leave it fixed, and let in-game sensitivity do the fine tuning.

One discipline that pays off: set DPI once and forget it. Pros rarely touch DPI between sessions — consistency beats optimisation. If you keep re-tuning DPI you are masking a sensitivity problem that eDPI math would solve in one calculation.

DPI	Feel	Good when
400	Slowest cursor, most control	You have desk space and like precise aim
800	Balanced, the pro default	Most players, most games
1600+	Fast cursor, less physical motion	Tiny desk or very high eDPI needs