The NEC PA621 supports a maximum resolution of 4096 x 2160. That's over three times the resolution of a 1920 x 1200 (WUXGA) multimedia projector, which is the most common resolution supported by similar spec projectors that have been on the market for more than two years. 1920 x 1200 (WUXGA) is also supported by this projector. This NEC projector also support supported graphics resolutionss of 2048 x 1080 and 2560 x 1600 (WQXGA) and 640 x 480 (VGA).
This projector's resolution (4096 x 2160) is actually the best supported resolution amongst all 6000:1 contrast ratio data projectors that have been available for around the same time as the PA621.
The worst supported resolution across comparable types of projector is 640 x 480 (VGA).