xga

XGA, the Extended Graphics Array is an IBM display standard introduced in 1990. Today, it is best known as a synonym for the 1024768 display resolution, but the official definition is broader than that. It was not a new and improved replacement for Super VGA, but rather became one particular subset of the broad range of capabilities covered under the "Super VGA" umbrella. The initial version of XGA expanded upon IBM's VGA (Video Graphics Array), adding support for two resolutions:

640480 pixels with high colour (16 bits per pixel, or 65,536 colors).
1024768 with a palette of 256 colours (8 bits per pixel)

XGA-2 added 1024768 support for high colour and higher refresh rates, improved performance, and added 13601024 in 16 million colours. All XGA modes have a aspect ratio rounded to 8 pixels. XGA should not be confused with VESA's EVGA that was released at a similar time.

Xga

See also