Dell Optiplex GX400

The 19-inch Dell P991 monitor delivered deep, rich colors and sharp text with only slight blurring at the maximum resolution of 1600 by 1200. The black, midsize tower case offers chassis-intrusion detection, a double-loop case lock, and four rear-mounted USB ports. Dell's OpenManage software permits remote upgrades, diagnoses, and maintenance. Expansion options abound, with five open slots and four open drive bays.