Apple rolls out skinny new version of the iMac

On Tuesday in San Jose, Apple executives rolled out a much thinner, lighter version of the iMac, the company’s signature desktop computer, which comes in at only 5 mm thickness for both the 21.5-inch and the 27-inch model. The models will ship before the holidays, with the 21.5-inch version starting at $1299 and shipping in November, and the 27-inch starting at $1799 and shipping in December.

Apple was able to build the much thinner version of the iMac by using a technique called friction stir welding, which melds the aluminum backing and the display together, and taking out an air gap between the display and glass. The company said the new screen will have 75 percent less reflection.

The last iMac updgrade came in May 2011, meaning these changes will come just in time for the holidays for consumers looking for a new model.

The new iMac will have four USB 3.0 ports, two Thunderbolt and gigabit Ethernet ports, as well as a FaceTime camera and dual mics. It will weigh only eight pounds, although it’s hard to imagine many people carrying them from place to place. The device will also for the first time be available with an optional hybrid drive dubbed “Fusion Drive” that combines Flash and traditional HDD storage, offering much faster access to often-used applications.

Apple iMac 21.5-inch and 27-inch desktops