The Ricoh PJ WX6170N 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 frequently found resolution supported by data projectors of this age and type. 640 x 480 (VGA) is also supported by this projector. In addition, this multimedia projector supports a graphics resolution of 1280 x 800 (WXGA).
A 1920 x 1200 (WUXGA) graphics resolution is in fact the best supported resolution across all data projectors that have been around for a comparable time to the PJ WX6170N.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution across comparable types of data projector.