The highest resolution supported by the Epson 520 is 1600 x 1200 (UXGA). That's over six times the resolution of the most common graphics resolution of 640 x 480 (VGA) (which is also supported by this multimedia projector). This Epson projector also support graphics resolutions of 1280 x 800 (WXGA), 1400 x 1050 (SXGA+) and 1440 x 900 (WXGA+) and 800 x 600 (SVGA).
A 1600 x 1200 (UXGA) graphics resolution is in fact the best supported resolution across all similar spec data projectors that have been on the market for a comparable time to the 520.
Across comparable types of multimedia projector the worst supported resolution is 640 x 480 (VGA).