VGA in an acronym for Video Graphics Array. VGA, SVGA and XGA all measure the resolution of the video signal being output by a personal computer. VGA consists of 640 vertical lines x 480 horizontal lines, SVGA 800 lines x 600 lines, and XGA 1024 x 768, SXGA 1280 x 1024, and UXGA 1600 x 1200. XGA (1024 x 768) is the most common standard in laptop computers, and therefore the most popular Projector resolution as well.