what is the latest os for macbook air mid 2011

Apps open and switch swiftly, multitasking is handled without complaint, and things you might have shied away from on the last-gen model – processing audio or video clips, for instance – are far more realistic on this new machine. In practice, that makes for a slimline ultraportable capable of the sort of tasks you'd have turned to a regular notebook for last year. In fact, it comes surprisingly close to the 6,309 scored by 2010's Core i7 MacBook Pro (though obviously lags well behind the current-gen MacBook Pro). We ran Geekbench, a synthetic test of processor and memory performance, and the MacBook Air scored an impressive 5,705, considerably higher than the 2,178 scored by the 11.6-inch Core 2 Duo model we reviewed in October last year. Our review unit is the 13.3-inch model with the standard Core i5 1.7GHz processor and 4GB of RAM. Finally, the Mac App Store offers access to a growing catalog of Apple and third-party software. The iLife suite – iPhoto, iMovie and Garageband – has been updated to support full-screen use, while Safari 5.1, iChat, iCal, Photo Booth and FaceTime are all preloaded.

Mail has borrowed heavily from the email client on the iPad, with a cleaner UI and new 'widescreen' view that works very well with the (optional) conversational message layout. In addition to the more fundamental changes to the OS, there are some alterations to the pre-loaded software.

What is the latest os for macbook air mid 2011