HP on Wednesday began selling its most direct competitor to the MacBook Air, the Envy 14 Spectre. The pseudo-ultrabook starts at a relatively steep $1,400 with a 14-inch, 1366x768 display, a 1.6GHz low-voltage Core i5, 4GB of RAM, and a 128GB solid-state drive. Options can take it to a 1.8GHz Core i7 and a 256GB SSD.