Razer

To detect movement, traditional optical and newer laser mice emit a beam of light which is reflected off the mousing surface, back into the sensor. This will create an image that is stored in the sensor. The ‘frames per second specification’ indicates how many images a sensor will receive per second, with which the sensor will then use to calculate the mouse's precise location, speed and direction.

A basic rule of thumb for a Frames per Second rating is that the higher it is, the more accurate the tracking for the mouse is. NOTE: The Razer 3G Laser Sensor engine does not use the same technology as traditional laser and optical sensors and does not have a FPS rating. Please refer to the Razer 3G Laser whitepaper for more information.

Optical and Laser mice all perform better with a higher FPS rating. The more frames (or images) a sensor captures, the more infromation it can capture and subsequently report to the computer.

High sensitivity gamers or FPS gamers that prefer using a sniper rifle will benefit from a mouse with a high FPS rating. The additional frames taken every second can spell the difference between a headshot and a miss, especially with the highest levels of screen resolutions.