The highest resolution supported by the CTWQ-51B is 2560 x 1600 (WQXGA). That's over thirteen times the resolution of a 640 x 480 (VGA) multimedia projector, which is the most common resolution supported by multimedia projectors of this type and age. 640 x 480 (VGA) is also supported by this Barco multimedia projector.
A 2560 x 1600 (WQXGA) graphics resolution is in fact the best supported resolution across all 5300:1 contrast ratio multimedia projectors that are a similar age to the CTWQ-51B.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution across similar types of multimedia projector.