The MS630ST supports a maximum resolution of 1920 x 1200 (WUXGA). That's over seven times the resolution of a 640 x 480 (VGA) projector, which is the most frequently found resolution supported by data projectors that were launched around the same time as the MS630ST. 640 x 480 (VGA) is also supported by this multimedia projector.
This multimedia projector's resolution (1920 x 1200 (WUXGA)) is in fact the best supported resolution amongst all 13000:1 contrast ratio projectors that are a similar age to the MS630ST.
A 640 x 480 (VGA) supported graphics resolutions is the worst supported resolution across comparable types of multimedia projector.