FBU Computing Abbreviation

Frame Buffer Unit

A Frame Buffer Unit (abbreviated as FBU) is a dedicated memory component in computer graphics systems used to store image data before it is sent to the display. It holds the pixel information—such as color, depth, and sometimes transparency—for each point on the screen, allowing the system to manage smooth rendering and updates. The FBU acts as a staging area where rendered frames are assembled before being output to a monitor, projector, or other display device.

In modern computing, FBUs are integral to GPUs (Graphics Processing Units) and are essential for tasks ranging from gaming and video playback to CAD modeling and virtual reality. By buffering frames, they prevent flickering, support higher resolutions, and enable advanced effects like double buffering and anti-aliasing. Their capacity and speed directly influence visual quality and rendering performance, making them a critical element in both consumer and professional graphics hardware.