The highest resolution supported by the Optoma DH1012 is 1920 x 1200 (WUXGA). That's over seven times the resolution of the most common supported graphics resolutions of 640 x 480 (VGA) (which is also supported by this projector). In addition, this multimedia projector support supported graphics resolutionss 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) supported graphics resolutions is in fact the best supported resolution amongst all projectors that are a similar age to the DH1012.
The worst supported resolution amongst comparable types of projector is 640 x 480 (VGA).