The highest resolution supported by the Benq TH682 is 1920 x 1200 (WUXGA). That's over seven times the resolution of the most frequently found graphics resolution of 640 x 480 (VGA).
A 1920 x 1200 (WUXGA) graphics resolution is in fact the best supported resolution across all data projectors that have been around for a similar time to the TH682.
The worst supported resolution amongst similar types of projector is 640 x 480 (VGA).
If the resolution of this projector is not high enough for you then you might want to consider the Benq MH680 (1600 x 1200 (UXGA)|1920 x 1080 (HD 1080)|640 x 480 (VGA)) which is also higher rated.