The highest resolution supported by the Optoma W303ST is 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 data projectors that have been around for a similar time to the W303ST. 640 x 480 (VGA) is also supported by this Optoma projector. In addition, this data projector support graphics resolutions of 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 768 (WXGA), 1280 x 800 (WXGA), 1360 x 768 (WXGA), 1400 x 1050 (SXGA+) and 1440 x 900 (WXGA+) and 1600 x 1200 (UXGA).
A 1920 x 1200 (WUXGA) graphics resolution is actually the best supported resolution across all data projectors that have been around for a similar time to the W303ST.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution amongst similar types of projector.