FPS stands for "Frames Per Second" and is a common term used by gamers in forums and reviews. It generally refers to how fast the game displays individual frames on the screen. A cinema film, for instance, commonly displays frames at 24 FPS which, when combined with artifacts such as motion blur, is fast enough to fool the human eye. Computer and video games generally need a higher frame rate to achieve the same effect.
To show the FPS in the PC version using the console, type either: