The highest resolution of the Optoma DS330 is SVGA (800x600). That's 39% less resolution than the most frequently found projector native resolution of XGA (1024x768).
This projector's resolution (SVGA (800x600)) is actually the worst resolution amongst all similar spec data projectors that have been around for around the same time as this data projector.
A 1080p (1920x1080) projector native resolution is the best resolution across comparable types of projector.
What does "projector native resolution" mean?