The Ricoh PJ X6180N supports a maximum resolution of 1920 x 1200 (WUXGA). That's over seven times the resolution of a 640 x 480 (VGA) multimedia projector, which is the most common resolution supported by projectors of this age and type. 640 x 480 (VGA) is also supported by this projector. In addition, this multimedia projector supports a supported graphics resolutions of 1024 x 768 (XGA).
This projector's resolution (1920 x 1200 (WUXGA)) is in fact the best supported resolution amongst all data projectors that were released more than two years ago.
A 640 x 480 (VGA) supported graphics resolutions is the worst supported resolution amongst comparable types of projector.