The HC9000D supports a maximum resolution of 1920 x 1200 (WUXGA). That's over seven times the resolution of a 640 x 480 (VGA) data projector, which is the most common resolution supported by multimedia projectors that are a similar age to the HC9000D. 640 x 480 (VGA) is also supported by this multimedia projector. In addition, this data projector supports a graphics resolution of 1920 x 1080 (HD 1080).
A 1920 x 1200 (WUXGA) graphics resolution is actually the best supported resolution across all projectors that were launched around the same time as the HC9000D.
A 640 x 480 (VGA) graphics resolution is the worst supported resolution amongst similar types of projector.