Apple refreshed its iMac desktop Tuesday, taking its design to the cutting edge and unveiling a computer that has a screen just 5 millimeters thick.

The company said that the desktop has 40 percent more volume than it did before — something Apple accomplished by laminating its display and taking the optical drive out of the computer.

The new iMac comes in two sizes — 21.5 inches and 27 inches — and both have impressive quad-core Intel i5 processors, and pack 1 TB hard drives. The 21.5-inch model starts at $1,299 for the 2.7 Ghz processor, while the 2.9 Ghz processor model costs $1,499. For the 27-inch models, Apple has increased each price by $500.

The new iMacs did not get the retina display bump that many were expecting.

Apple did, however, unveil a new, 13-inch MacBook Pro with a retina display, following up on the refresh it gave its 15-inch model in June. The new laptop is almost a pound lighter than its predecessor, and has over 4 million pixels in its screen.

“It’s the second-highest resolution notebook display,” Schiller said, getting a laugh from the audience. The highest-resolution notebook display, of course, is found on the 15-inch MacBook Pro.

The new 13-inch MacBook Pro gets all the bells and whistle of Mountain Lion as well, with dictation features and iCloud features, and the Power Nap feature that will update your contacts and other information through iCloud while the computer is asleep.

The laptop computer starts at $1,699, for a 2.5Hz dual-core i5, 8GB of RAM and 128GB of flash memory. The computers went on sale Tuesday.

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