TrustedReviews posted a review of the Dell 3400MP Projector

Where the diminutive LP120 offers 1,000 ANSI lumens to go with its native resolution of 1,024 x 768, the diminutive Dell boasts 1,500 lumens of brightness with its 156w P-VIP bulb, making the InFocus seem positively dull in comparison. To illustrate the potential of the optics this (on paper) means the 3400MP is capable of projecting pictures up to 248in in diagonal - far larger than the LP120’s 137in.

Dell 3400MP Projector Review