The highest resolution supported by the PT-DW640 is 1920 x 1200 (WUXGA). That's over seven times the resolution of the most frequently found graphics resolution of 640 x 480 (VGA) (which is also supported by this Panasonic projector). In addition, this multimedia projector supports a graphics resolution of 1280 x 800 (WXGA).
A 1920 x 1200 (WUXGA) graphics resolution is in fact the best supported resolution amongst all 2000:1 contrast ratio data projectors that have been available for around the same time as the PT-DW640.
The worst supported resolution amongst similar types of projector is 640 x 480 (VGA).