The highest resolution supported by the NP-P451 is 1600 x 1200 (UXGA). That's over six times the resolution of the most common graphics resolution of 640 x 480 (VGA) (which is also supported by this multimedia projector). In addition, this projector support graphics resolutions of 1280 x 1024 (SXGA), 1280 x 800 (WXGA) and 1400 x 1050 (SXGA+) and 800 x 600 (SVGA).
A 1600 x 1200 (UXGA) graphics resolution is actually the best supported resolution amongst all multimedia projectors that have been around for a comparable time to the NP-P451.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution amongst similar types of projector.