128-bit:
This refers either to the internal graphics engine or to the path from the controller to the graphics memory. 3D Prophet graphics boards have a true 128-bit subsystem because they incorporate both a 128-bit internal graphics engine as well as a 128-bit path from the controller to the graphics memory, thus providing enhanced 2D and 3D performance.

 

 

OpenGL (Open Graphic Library):
A 3D image calculation standard developed by Silicon Graphics, and supported by most 3D graphic accelerator boards.

 

 

Operating system:
The program that runs the computer. This is loaded into memory when you boot up your PC and acts as an interface between hardware and software.

 

 

Overclocking:
This involves altering the settings of the computer system's hardware and/or graphics board memory to run at a higher clock frequency than originally set by the manufacturer, in an attempt to improve system performance. There is a risk, albeit slight, that overclocking will impair your system.

 

 

Overlay:
Encrustation of the video signal (e.g. a DVD film) onto the VGA image (e.g. the Windows desktop).