MacBook Air

The MacBook Air is a line of Macintosh ultraportable notebook computers from Apple Inc. The Air was designed to balance both performance and portability, consisting of a full-sized keyboard design, a machined casing made of aluminum, and a very light and thin structure. The MacBook Air is available in two sizes, with the diagonal length of the display determining the model size: 13.3-inch and 11.6-inch (or 33.78 cm and 29.46 cm, respectively). A range of model choices with different specifications are produced by Apple, and as of 2011, all Air models use solid-state drive (SSD) storage and Intel Core i5 or i7 central processing units (CPUs).^[2]

In the current Macintosh product line, the MacBook Air sits below both the thicker, higher-performance MacBook Pro and thinner, lighter new MacBook. The MacBook Air was originally released as a premium ultraportable which was positioned above the then entry-level MacBook.^[3] Since then, the MacBook Air has become Apple's entry-level laptop due to the discontinuation of the original MacBook in 2011, as well as lowered prices on subsequent iterations of the MacBook Air.^[4] In recent years, the MacBook Air has become the best-selling Macintosh computer and the best-selling ultraportable notebook,^[5][6] being credited with revolutionizing lightweight yet powerful laptops known as Ultrabooks.^[7]

History

Steve Jobs with a MacBook Air at the 2008 keynote.

Steve Jobs introduced the first MacBook Air during a speech at his keynote at the 2008 Macworld Conference & Expo on January 15, 2008.^[8] The first-generation MacBook Air was a 13.3"-only model, initially promoted as the world's thinnest notebook.^[9] It featured a custom^[10] Intel Merom CPU and Intel GMA graphics. In late 2008, the CPU was updated to a faster, non-custom Penryn CPU and integrated Nvidia GeForce graphics while the hard drive capacity was increased and the micro-DVI video port was replaced by the Mini DisplayPort.^[11] A mid-2009 refresh, introduced alongside the MacBook Pro family, featured a slightly higher-capacity battery, and a faster Penryn CPU.^[12]

On October 20, 2010, Apple released a redesigned 13.3" model, with improved enclosure, screen resolution, battery, and flash storage instead of a hard drive. In addition, a new 11.6" model was introduced, offering reduced cost, weight, battery life, and performance relative to the 13.3" model, but better performance than typical netbooks of the time.^{[13][14][15][16]}

On July 20, 2011, Apple released updates to the 11.6" and 13.3" models of the MacBook Air, which also became Apple's entry-level laptops due to lowered prices and the discontinuation of the white MacBook around the same time.^[4] The mid-2011 MacBook Airs were powered by the new Sandy Bridge 1.6 or 1.7 GHz dual-core Intel Core i5, or 1.8 GHz dual-core Intel Core i7 processors, that came with an Intel HD Graphics 3000 processor, and with a backlit keyboard, two USB 2.0 ports, FaceTime camera, a standard of 2 GB of RAM (configurable up to 4 GB), Thunderbolt which shares function with Mini DisplayPort and Bluetooth was upgraded to v4.0.^[17][18] Maximum SSD flash memory storage options were increased up to 512 GB. The camera was upgraded to 720p FaceTime HD. Both 11" and 13" models had an analog audio output/headphone minijack (that also supports an iPhone/iPod touch headset with microphone), but only the 13" model had an integrated SDXC-capable SD Card slot. These models use a less expensive "Eagle Ridge" Thunderbolt controller that provides two Thunderbolt channels (2 × 10 Gbit/s bidirectional), compared to the MacBook Pro which uses a "Light Ridge" controller that provides four Thunderbolt channels (4 × 10 Gbit/s bidirectional). A USB ethernet adapter was immediately available upon release and a Thunderbolt-to-Firewire 800 adapter became available in mid-year 2012.

On June 11, 2012, Apple released an updated model in the same form factor as the prior model. The new model is powered by the new Ivy Bridge dual-core Intel Core i5 and i7 processors, doubles the RAM and SSD speeds, has the new USB 3 ports (with USB 2 capability) in place of the USB 2 ports and the new MagSafe 2 charging port.^[19]

On June 10, 2013, Apple released another update in the same form factor as the 2012 model during the company's Worldwide Developer Conference (WWDC). The 11" and 13" models have a minimum standard 4 GB RAM, with a maximum configuration of 8 GB. Both models are powered by the Haswell ULT 1.3 GHz dual-core Intel Core i5 processors, with Turbo Boost up to 2.6 GHz, while a 1.7 GHz Dual-Core i7, with Turbo Boost up to 3.3 GHz, option is also available. Each model's storage standard is 128 GB SSD, upgradeable to 256 GB and 512 GB SSD. Due to the Haswell CPUs, battery life has been considerably improved from the previous generation, and the mid-2013 models are capable of 9 hours on the 11" model and 12 hours on the 13" model; one team of reviewers actually exceeded the manufacturer's battery life ratings during their rundown test.^[20]

While Apple's MacBook lines have not been immune to the consumer trend towards mobile devices,^[21] they still managed to ship 2.8 million MacBooks in Q2 2012 (the majority of which are the MacBook Air) compared to 500,000 total Ultrabooks,^[5][6] despite there being dozens of Ultrabooks from various manufacturers on the market while Apple only offered 11" and 13" models of the Macbook Air.^[22] While several Ultrabooks were able to claim individual distinctions such as being the lightest or thinnest, the Air was regarded by reviewers as the best all-around Ultrabook in regard to "OS X experience, full keyboard, superior trackpad, Thunderbolt connector and the higher-quality, all-aluminum unibody construction".^[23] The Air was among the first to receive Intel's latest CPUs before other PC manufacturers, and Apple Mac OS X has gained market share on Windows in recent years.^[24][25] Through July 1, 2013, the MacBook Air took in 56 percent of all Ultrabook sales in the United States, despite being one of the higher-priced competitors. ^[26]

Design

Left side of a late-2010 MacBook Air. From left to right, MagSafe power connector, USB port, headphone jack and built-in microphone.

The MacBook Air is designed for thinness, and is also lighter than most competing models.^[27] The computer features a glossy LED backlit display and a full-size keyboard, as well as a large trackpad that responds to Multi-Touch gestures such as pinching, swiping, and rotating.^[28] With the release of Mac OS X Snow Leopard, the Air's multi-touch trackpad also supports handwriting recognition of Chinese characters.^[29]

On the 11" MacBook Air, the left side of the computer has a MagSafe power connector, a USB port, a headphone jack, and a microphone.^[28] The right side of the computer has a USB port and a Mini DisplayPort, now sharing Thunderbolt function in the 2011 version. On top of the screen bezel there is a webcam, first dubbed iSight and now the FaceTime camera.

The MacBook Air was the first subcompact laptop offered by Apple since the full-featured 12" PowerBook G4 was discontinued in 2006. It was also Apple's first computer with an optional solid-state storage drive.^[30] ArsTechnica found "moderate" performance improvements of the 64 GB^{[note 1]} solid-state drive of the first generation Air over the standard 80 GB hard drive in tests. On October 14, 2008, new models were announced with improved capacities of 128 GB (solid-state) and 120 GB (hard drive). For the late 2010 MacBook Air, only flash storage is available, in 64 or 128 GB capacities on the 11" model, and 128 or 256 GB on the 13".

The CPU in the first-generation MacBook Air was a custom engineered Intel Core 2 Duo Merom that was 40 percent of the size of the standard chip package.^[31] For models of late-2008, the CPU was replaced with a low-voltage Core 2 Duo Penryn chip with 6 MB of cache, running on a 1066 MHz bus.^[32]

The MacBook Air officially has no user-replaceable parts, though third parties do sell upgrade kits for the SSDs. The flash memory and battery are enclosed within the casing, with RAM soldered onto the motherboard. The flash memory, which is difficult to access, has a 128 MB cache^[33] and a mSATA connection to the motherboard.^[34] The battery can be replaced using normal screwdrivers, though it is unclear whether this process would void the computer's warranty.^[35][36] As part of the out-of-warranty service, Apple offers to replace the battery for a fee.^[37]

The optional Apple USB 'SuperDrive' DVD-drive.

Apple incorporated several features in the design of the MacBook Air, such as the reduction of toxic chemicals like lead, to make it more environmentally friendly. The MacBook Air contains no BFRs and PVC wiring, meets Energy Star Version 5.0 requirements, has a recyclable enclosure, and is rated EPEAT Gold. Its display is made from arsenic-free glass, and contains no mercury.^[9][38] To reduce the computer's size and weight, several features were sacrificed. It was Apple's first notebook since the PowerBook 2400c without a built-in removable media drive.^[39] It also omits a FireWire port, Ethernet port, line-in, media card slots (except the 13" 2010, 2011 and 2012 models, which have an SD card slot), and a Kensington Security Slot.^[40]

To gain the features of an optical drive, users can either purchase an external USB SuperDrive (or other brand of DVD drive) or the bundled Remote Disc software, only for disk browsing or software installation, to access the optical drive of another computer wirelessly^[41] that has the Remote Disc program installed.^[42][43] It can also be used to reinstall the system software from the included installation DVD. Remote Disc supports NetBooting, so the MacBook Air can boot from its installation DVD in another computer's drive, which requires Remote Install Mac OS X to be running on the remote computer. The software does not allow playback or information of DVDs or CDs, nor installing Windows.^[41] For these features, an external USB drive is required.^[41] More recent versions of OS X replaced the installation DVD with a USB flash drive containing the system software, eliminating the need for the remote install.

The 2010 revision includes two speakers for stereo sound while earlier versions have one speaker located under the keyboard. The 2011 update has a 1280×720 FaceTime HD Camera, replacing the previous 640×480 iSight camera. The 2012 update replaces USB 2 with the twice-as-fast USB 3, and uses the MagSafe 2 connector instead of the original MagSafe connector, for charging purpose.

Specifications

Reception

Comparison with iPad and Netbooks

Although the 11" Air is only slightly lighter than the 13" Air, the biggest difference is the footprint which gives each model a distinct category; the 13” Air is much closer in size to most other conventional laptops, while the 11” Air is almost small enough to fit in a space that can hold an iPad.^[57][58]

Since 2011, the MacBook Air and iPad have supplanted the netbook as a computing device of choice between a smartphone and a full-fledged laptop.^[57][58] The 11" MacBook Air carries the desirable essential attributes of a netbook, but without the drawbacks of a slower processor and less capable operating system , albeit at a higher price.^{[59][60][61][62][63]} At the high end of the performance spectrum of Apple's compact computing devices, the 11.6" MacBook Air has revolutionized ultra-light portables with a traditional keyboard and display, which made fewer performance sacrifices albeit at considerably higher production cost.^[64][65] At the low end, Apple introduced the iPad—a different form factor than the netbook, but with improved computing capabilities and lower production cost. Both of these led to a decline in netbook sales, and most PC manufacturers have consequently discontinued their netbook lines in response.^[66] Capitalizing on the success of the MacBook Air,^[67] Intel promoted Ultrabook as a new high-mobility standard, which has been hailed by some analysts as succeeding where netbooks failed.^[68][69][70]

Ultrabook competition

Intel developed a set of specifications for the Ultrabook, a higher-end type of subnotebook produced by various PC manufacturers and usually running Windows. Competing directly with the Air, the Ultrabook is intended to reduce size and weight, and extend battery life without compromising performance.^[71][72][73]

The Air was among the first to receive Intel's latest CPUs before other PC manufacturers, and Apple Mac OS X has gained market share on Windows in recent years.^[24][25] Through July 1, 2013, the MacBook Air took in 56 percent of all Ultrabook sales in the United States, despite being one of the higher-priced competitors. ^[26] Apple has traditionally dominated the premium PC market, in 2009 having a 91 percent market share for PCs priced at more than $1,000, according to NPD, and Ultrabooks were an attempt by other PC manufacturers to move in on Apple's turf.^[74] While Apple's MacBook lines have not been immune to this consumer trend towards mobile devices,^[21] they still managed to ship 2.8 million MacBooks in Q2 2012 (the majority of which are the MacBook Air) compared to 500,000 total Ultrabooks,^[5][6] despite there being dozens of Ultrabooks from various manufacturers on the market while Apple only offered 11" and 13" models of the Macbook Air.^[22] Forrester Research analyst Frank Gillett attributes Apple's increased success in the enterprise market to the 2010 MacBook Air and the iPad.^[75]

While several Ultrabooks were able to claim individual distinctions such as being the lightest or thinnest, the MacBook Air was regarded by reviewers as the best all-around Ultrabook in regard to "OS X experience, full keyboard, superior trackpad, Thunderbolt connector and the higher-quality, all-aluminum unibody construction".^[23]

The Microsoft Surface Pro has a similar size and price to the 11" MacBook Air;^[76][77] Apple CEO Tim Cook has criticized the Surface Pro and other Ultrabook hybrids running the touch-based Windows 8, that attempt to combine laptop and tablet functionality in one device, saying that such devices were confusing like trying to "combine a fridge and a toaster".^[78][79]

When released in October 2010 the 13" model resolution was higher than the average 1366x768 screens of similar sized laptops. However, by mid-2013, with many premium Ultrabooks having high resolution screens (1080p or greater) as standard or upgrades, the MacBook Air has been increasingly criticized for sticking with a low-resolution screen. Many in the tech community had expected Apple to release a MacBook Air with Retina Display by mid-2013, similar to the MacBook Pro Retina which came out in 2012.^[80] The October 2013 refresh of the 13" MacBook Pro Retina, with a slimmer chassis and a lower price point, is mentioned as a potential MacBook Air alternative as the battery life is not much shorter while not being considerably bulkier.^[3][81]

"Thinnest" disputes

At the launch of the first MacBook Air in January 2008, Apple claimed it to be the thinnest laptop in the world. The discontinued Sharp Actius MM10 Muramasas was described in some sources as thinner than the Macbook Air, being 0.54 inches (14 mm) thick at its minimum.^[82] It, like the MacBook Air, was a tapered design, with a maximum height of 0.78 inches (20 mm)—slightly thicker than the MacBook Air.^[83]

Since the release of the first MacBook Air, other ultrathin laptops have been released, such as the Dell Adamo,^[84] launched in March 2009, which is a constant 0.65 inches (17 mm) thick. Apple subsequently removed "The world's thinnest notebook" from their marketing materials.

The 11.6" MacBook Air, introduced in October 2010, is only slightly larger and heavier (when closed) compared to the iPad 2. The 11.6" Air has been regarded as thin and light compared to other ultraportables, such as the Sony VAIO Z and the 11" Samsung Series 9.^[85]

As of 2013, several Ultrabooks such as the Sony VAIO Pro have managed smaller dimensions than the MacBook Air by using carbon fiber construction.^[86][87][88]

Issues

Following its introduction, the MacBook Air was greeted with a mixed reception. The portability of the MacBook Air was praised in reviews, but the compromise in features was criticized.^[89][90][91] The full-sized keyboard, weight, thinness, and Multi-Touch trackpad were appreciated in reviews, while the limited configuration options and ports, slow speed (in non-SSD models), non-user-replaceable battery, small hard drive, and price were criticized.^[89][90] The flip-down hatch on the side of the original MacBook Air is a tight fit for some headphone plugs and USB devices, requiring users to purchase an extension cable. Apple removed the flip-down hatch on the late 2010 model in favor of open connection ports, as is the case with most other laptops.^[92][93]

Most of these problems have been dismissed by now, following many revisions and speed enhancements, and with the addition of more portability and ports.

Since the release of the first-generation product, some MacBook Air users have complained of CPU lockup caused by overheating. Apple released a software update in early March 2008 to fix the problem with mixed results: the deactivation of one CPU core was corrected; however, the runaway kernel problem remained for some users.^[94] The problem is aggravated by system-intensive tasks such as video playback or video chatting.^[95]

Due to a more mature manufacturing process, the CPUs in the second-generation MacBook Air perform better under load, as the first generation chips ran at a higher temperature—the processor needed to be throttled to avoid overheating and this further degraded performance.^[96]

On October 17, 2013, Apple announced a replacement programme for the 64 GB and 128 GB MacBook Air flash storage drives that are installed in Air systems purchased between June 2012 and June 2013.^[97]

Timeline of the MacBook family

See also

• Comparison of Macintosh models
• MacBook family
• MacBook Pro

Notes

References

External links

Wikinews has related news: Apple unveils new MacBook Air laptops, iLife '11 software suite

• MacBook Air – official site

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