FPS (frames per second) measures how frequently a picture, view of a video game, or other content appears on your screen. It is expressed as a number (unit Hertz). Frame per second is a primary factor for almost every game out there. The higher the frame rate, the smoother your game will be. For example, if you have 144Hz games, a PC that can render up to 144 fps will give you a great gaming experience with no lagging or skipping. This test is helpful if you want to know whether your computer can run games or apps at top performance. The frame rate also depends on how well your hardware's drivers and software work together.