Photos: Toshiba takes on MacBook Air, gamer laptops

Toshiba is updating its notebook lineup with four new models including the Portege R500-S5007V, which is 0.77 inches thick and weighs 2.4 pounds. That's .01 inches thicker and 0.6 pounds lighter than the MacBook Air--although Portege's screen is 12.1 inches as compared to Air's 13.3 inches.