The highest resolution supported by the Benq i500 is 1600 x 1200 (UXGA). That's over six times the resolution of a 640 x 480 (VGA) multimedia projector, which is the most frequently found resolution supported by 100000:1 contrast ratio projectors that are a similar age to the i500. 640 x 480 (VGA) is also supported by this Benq projector.
This projector's resolution (1600 x 1200 (UXGA)) is actually the best supported resolution amongst all data projectors that are a comparable age to the i500.
The worst supported resolution amongst comparable types of projector is 640 x 480 (VGA).