The E350d and the E352dn both ship with a 366MHz processor and 32MB of onboard memory (expandable to 160MB). The E450dn has a slightly faster processor -- 400MHz -- and ships with 64MB of RAM (expandable to 320MB). All three models offer connection via USB port and a parallel connector, but the E352dn and the E450dn also offer Ethernet connectivity for sharing the printer across a network. Lexmark also offers a wireless print adaptor for cable-free printing. The Samsung ML-3051ND offers wired networking and the same processor speed and memory capacity as the E450dn, making it a better value than Lexmark E350 series.
Performance
The Lexmark E350d is a little speed demon of a laser printer. In CNET Labs' tests, it cranked out a text document at a rate of 24.13 pages per minute and a page of mixed text and graphics at an impressive 25.47ppm. The comparably priced Samsung ML-3051ND prints the same pages at 19.2ppm and 19.8ppm, respectively, and the HP LaserJet 1022n prints text at 15.91ppm and graphics at 15.3ppm. Lexmark advertises the same print speeds for all models in the E350 series, so you can apply the numbers we found to the E352dn and the E450dn as well.
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Unsurprisingly, the Lexmark E350d displayed excellent text quality, with clear, sharp characters unmarred by jaggedness. The graphics quality wasn't quite as good, but more than serviceable. Details were sharp, but the photo and graphics elements were marred by some minor cross-hatching, and we noticed some minor compression in the dark end of the greyscale. We found the Samsung ML-3051ND's quality to be roughly the same.
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Edited by Matthew Elliott
Additional editing by Kate Macefield
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