The Optoma EH415ST supports a maximum resolution of 1920 x 1200 (WUXGA). That's over four times the resolution of the most frequently found graphics resolution of 800 x 600 (SVGA) (which is also supported by this Optoma projector). In addition, this projector support graphics resolutions of 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 800 (WXGA), 1400 x 1050 (SXGA+), 1440 x 900 (WXGA+), 1600 x 1200 (UXGA) and 1920 x 1080 (HD 1080) and 640 x 480 (VGA).
This data projector's resolution (1920 x 1200 (WUXGA)) is actually the best supported resolution amongst all multimedia projectors that have been around for a comparable time to the EH415ST.
Amongst similar types of data projector the worst supported resolution is 800 x 600 (SVGA).