The highest resolution supported by the NEC PA622 is 4096 x 2160. That's over three times the resolution of the most common supported graphics resolutions of 1920 x 1200 (WUXGA) (which is also supported by this multimedia projector). This NEC multimedia 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 in fact the best supported resolution across all projectors of a comparable type and age to the PA622.
Across similar types of projector the worst supported resolution is 640 x 480 (VGA).