Lenovo LaVie HZ550 At 1.7 pounds, Lenovo's LaVie HZ550 is now the lightest 13-inch laptop in the world. But what does that mean, exactly? Put it this way: When we first got hands-on, we thought we were handling a dummy unit with no components inside. In fact, though, this thing is very real, with a full-fledged fifth-gen Intel Core processor thrumming inside. So far as we can tell, the only trade-off is the lack of a touchscreen, but even then Lenovo has a solution: Its just-announced LaVie HZ750 is the lightest convertible 13-inch laptop.

Dell XPS 13 Ultrabook Dell's redesigned XPS 13 Ultrabook might not be the lightest 13-inch laptop in the world (that honor goes to Lenovo), but it might well be the smallest. Thanks to some nearly invisible bezels that measure just 5mm wide, Dell was able to cram a 13-inch display into an 11-inch laptop. The result is a 2.6-pound machine that's more than a third of a pound lighter than the MacBook Air, with a smaller footprint, to boot.