The DELL 4350 supports a maximum resolution of 1920 x 1080 (HD 1080). That's 8% more resolution than a 1600 x 1200 (UXGA) data projector, which is the most common resolution supported by similar spec multimedia projectors that were released in the last year. The resolution of all projectors that have been on the market for a comparable time to the 4350 ranges from 640 x 480 (VGA) (worst) to 4096 x 2160 (best).
It may also be worth considering one of the other data projectors that support a resolution of 1920 x 1080 (HD 1080) currently available including because of it's better review score, the LG PF1000U ($1,143.99).
If the resolution of this data projector is too low for you then you might want to consider the Benq HT3050 ($979.99) (640 x 480 (VGA)|1920 x 1200 (WUXGA)) which also has a higher Rating.