The highest resolution supported by the Optoma BR324 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 data projector). In addition, this Optoma projector support supported graphics resolutionss of 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1400 x 1050 (SXGA+) and 1600 x 1200 (UXGA) and 800 x 600 (SVGA).
A 1920 x 1200 (WUXGA) supported graphics resolutions is actually the best supported resolution amongst all similar spec data projectors that have been available for a comparable time to the BR324.
The worst supported resolution amongst similar types of data projector is 640 x 480 (VGA).