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All of the ultra-low voltage lineup has two cores and four threads running at 17 watts thermal power design, along with integrated Intel HD Graphics 4000.
Leading off the new batch of Intel's third-generation processors is the i7-3667U, with a CPU base frequency of 2 gigahertz running as fast as 3.2 gigahertz with Turbo Boost Technology 2.0 Max Frequency, and 4 megabytes of L3 cache. Next down the lists the i7-3517U, which has a base speed of 1.9 gigahertz that ramps up to 3 gigahertz, along with 4 megabytes of L3 cache.
The lower-end Core i5 ultra-low voltage Ivy Bridge CPUs are led by the i5-3427U, which has a base frequency of 1.8 gigahertz that runs as fast as 2.8 gigahertz with Intel Turbo Boost, with 3 megabytes of L3 cache. And the lowest ultra-low voltage CPU announced Thursday is the i5-3317U, with a base frequency of 1.7 gigahertz, max frequency of 2.6 gigahertz, and 3 megabytes of L3 cache.
All of Intel's Ivy Bridge "Ultra Processors" have support for PCIe Generation 3, as well as Intel's Secure Key, OS Guard, AES/TXT/vPro and Virtualization technology.
The MacBook Air lineup was last updated nearly a year ago, in July of 2011. The notebooks were equipped with Intel's Sandy Bridge processors, and gained backlit keyboards and Thunderbolt ports.
Also announced by Intel on Thursday were a handful of dual-core traditional mobile chips that could find their way into other products in Apple's Mac lineup, specifically the low-end 13-inch MacBook Pro, or the Mac mini. The Core i5 and Core i7 mobile processors run at 35W TDP, feature four threads, include Intel HD Graphics 4000, and range in speed from 3.1 gigahertz to 3.6 gigahertz with Intel Turbo Boost.
Intel launched its first batch of Ivy Bridge processors in late April, declaring them the "world's first 22-nanometer product." A total of 13 high-end quad-core chips were released in the first round, and it's believed some of them could make their way into Apple's updated MacBook Pro lineup.
Rumors have suggested that Apple plans to launch new Macs at its forthcoming Worldwide Developers Conference, which will kick off on June 11. Some reports have indicated that Apple will unveil new MacBook Pros and iMacs at the event, but little has been said of an impending MacBook Air refresh.