The Precision 3520 has the staid looks you'd expect from a rather large business desktop, with enveloping black plastic on the palm rests and lid cover that is actually pleasingly soft to the touch. It's certainly not an ultraportable, but neither is it as heavy as you might initially expect, weighing 4.79 pounds and measuring 0.97 by 14.6 by 9.94 inches (HWD). This puts it in the middle of a pack of competing 15-inch business laptops. The HP ZBook Studio G3 is a tad lighter at 4.62 pounds. The Precision 15 5000, meanwhile, is heavier at 4.97 pounds, and several Lenovo models top 5 pounds, including the Z50-75. With no optical drive, however, we wish Dell had pushed the weight down in an attempt to match the 15-inch Apple MacBook Pro's 4.02 pounds.