The highest resolution supported by the CP-WX8255A is 1920 x 1200 (WUXGA). That's 20% more resolution than the most frequently found graphics resolution of 1600 x 1200 (UXGA) (which is also supported by this projector). In addition, this multimedia projector support a graphics resolution of 768 x 576 and 1024 x 768 (XGA).
A 1920 x 1200 (WUXGA) graphics resolution is actually the best supported resolution amongst all multimedia projectors of a comparable age and spec to the CP-WX8255A.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution amongst similar types of data projector.