The Ricoh PJ HD5450 supports a maximum resolution of 1920 x 1080 (HD 1080). That's over six times the resolution of the most frequently found supported graphics resolutions of 640 x 480 (VGA) (which is also supported by this multimedia projector). This projector also support supported graphics resolutionss of 1280 x 1024 (SXGA), 1280 x 768 (WXGA), 1280 x 800 (WXGA) and 1360 x 768 (WXGA) and 1680 x 1050 (WSXGA+).
A 1920 x 1080 (HD 1080) supported graphics resolutions is actually the best supported resolution amongst all data projectors of this age and type.
A 640 x 480 (VGA) supported graphics resolutions is the worst supported resolution across comparable types of projector.