The Benq LU9715 supports a maximum resolution of 1600 x 1200 (UXGA). That's over six times the resolution of the most common graphics resolution of 640 x 480 (VGA).
This projector's resolution (1600 x 1200 (UXGA)) is in fact the best supported resolution across all 100000:1 contrast ratio projectors that have been around for a similar time to the LU9715.
The worst supported resolution across similar types of projector is 640 x 480 (VGA).
If you want a multimedia projector with a higher resolution then you might also want to look at the Canon LX-MU700 (640 x 480 (VGA and cheaper)|1024 x 768 (XGA and cheaper)|1280 x 1024 (SXGA and cheaper)|1280 x 800 (WXGA and cheaper)|1400 x 1050 (SXGA+ and cheaper)|1440 x 900 (WXGA+ and cheaper)|1600 x 1200 (UXGA and cheaper)|1680 x 1050 (WSXGA+ and cheaper)|1920 x 1200 (WUXGA and cheaper) and cheaper).