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Showing posts with label apple macbook. Show all posts
Showing posts with label apple macbook. Show all posts

Sunday, April 27, 2014

We're living in a post-iPad age for PCs. Excellent battery life and supremely portable forms sometimes make me ask: why use a laptop, which has subpar battery life, at all? Why not just get things done on a tablet instead?
The new MacBook Airs announced at WWDC erase part of that question: the battery life in these new models is astounding. They hit iPad territory, and blow away last year's performance. So, Mac laptops with iPad-strength batteries, check. And lower prices, too? Check again.
Also a nice surprise: the 13-inch Air and 11-inch Air are more similar than ever, with the same exact new fourth-gen Intel Haswell processors , storage options, RAM, and upgraded 802.11ac Wi-Fi capability. Which also means, other than the battery, in most ways they're pretty much the same as before.
The biggest problems with last year's otherwise excellent little 11-inch Air were that the entry-level $999 model only came with a 64GB solid-state drive, and that its 5-hour battery life was a compromise compared with the 7-plus hours of the 13-inch.
This year, the $999 entry-level model has a 128GB SSD, and the battery life's an awesome 10-plus hours. In its size class, the 11-inch Air has become a seriously perfect little laptop...if you can forgive its year-over-year sameness.
Sarah Tew/CNET
I'd be lying if I didn't say I wish the new Airs had bigger, better-resolution screens and more ports. Still, I'd give these up gladly for better battery life and more storage any day of the week. Unless you've got your heart set on a Retina Display, these new Airs are worth considering for that battery life alone. I do feel these laptops are a lot less exciting, in theory, but the debate of Apple and its product inventiveness is a coffee-shop conversation for another time. In practice, this Air has made practical improvements, and it's the workhorse to beat...mainly because of that impressive battery.

For example, the Samsung Chromebook cost just £230 / US$330 / AU$320 at launch. There are exceptions, of course. Google's own Chromebook Pixel is a gorgeous high-end notebook costing £1,050 / US$1,300 (around AU$1,730), which is more than either of the two 11-inch MacBook Air models in the mid-2013 refresh, but it proves cloud computers can be as stylish and desirable as an Apple notebook.
11-inch MacBook Air 2013 review
If you want an ultra-portable Windows 8 laptop, the Samsung Series 9 NP900X3D has an Intel Core i5 processor and 128GB of flash storage like this MacBook Air, but its screen is 13 inches, and we're testing the 11-inch MacBook Air.
The Lenovo ThinkPad X1 Carbon Touch is one of the thinnest and lightest Windows 8 netbooks on the market, and a very credible alternative to the MacBook Air if you prefer Windows to OS X.
Since the late 2010 MacBook Air refresh, Apple has released four individual MacBook Air models with each generation. The mid-2013 release is no exception. Once again we have two 11-inch models and two 13-inch MacBook Airs. All use 1.3GHz dual-core Intel Core i5 processors from Intel's new Haswell range.
11-inch MacBook Air 2013 review
The two 11-inch MacBook Airs have double the solid state storage of the previous generation of MacBook Air, at 128GB for the cheaper model we reviewed and 256GB for the more expensive 11-inch MacBook Air, up from 64GB and 128GB respectively. The 13-inch MacBook Airs retain their predecessors' 128GB and 256GB of storage, but are a little cheaper.
Even with the new Haswell processors, gamers, video editors and other high-needs users might prefer the power offered by a MacBook Pro, but the highly portable MacBook Air is perfect for students, business travellers and just about anyone who appreciates its incredibly thin and light design.
The 11-inch MacBook Air 2013 with 128GB storage that we reviewed is the cheapest model in the range, priced at £849 / US$999 / AU$1,099.

Design and features
Swap someone's 2012 MacBook Air with the 2013 model and he or she will never know the difference. Cosmetically, it's identical to last year's version: same aluminum unibody construction, same ports, same 1,366x768-pixel 11.6-inch display, same keyboard and clickable trackpad.
Sarah Tew/CNET
Consider that the MacBook Air is a laptop that's stayed largely unchanged (and the 11-inch version feels identical to the one that debuted in 2010), and you have what amounts to a pretty conservative computer update.
Sarah Tew/CNET
And yet, the Air's still one of the best-feeling laptops, all-around, that exists. Apple did its homework making the Air feel comfortable, and it's paid off with a long shelf life. The glass multitouch trackpad's still the most responsive out there, although the surface area on the 11-inch Air is small and narrower, making four-finger gestures feel cramped. The backlit keyboard's the same size and feel as on the 13-inch Air, and still feels great, although the row of function keys are pretty shrunken down.
Sarah Tew/CNET
The Air doesn't feel as wafer-thin, though. The Sony Vaio Pro 11 trumps the Air on size and weight (1.9 pounds), compared with the relatively more beefy 2.3 pounds on Apple's all-aluminum design. It still feels good to hold, but it's not astonishing anymore.
The 11-inch Air and the Sony Vaio Pro 11. Sarah Tew/CNET
The 11.6-inch display feels too small for the Air's size, though. It's the only 16:9 wide-screen display in Apple's laptop arsenal, but you could have fit a larger screen in there -- the bezel's awfully wide. That's because it really has the base of a 12-inch laptop, which is how it accommodates such a large keyboard. Interestingly, the 11-inch Air's screen and bezel have exactly the same height and bezel thickness as on the 9.7-inch iPad. The Air's 16:9 screen is wider.
The Vaio Pro 11 (right) has a smaller footprint than the 11-inch Air, and a 1080p display. Sarah Tew/CNET
The 1,366x768-pixel-resolution display -- same as last year's -- is admittedly very crisp and covered with a bit of antiglare coating. But all you have to do is stare at your Retina iPad display to see what a richer, higher-res display could look like. And many laptops now have higher resolutions: the Vaio Pro 11 and Microsoft Surface Pro, similarly sized (and priced) products, have 1,920x1,080-pixel resolution packed into 11- and 10-inch displays. There isn't much of an excuse this year.




Apple MacBook Air (11-inch, June 2013)
Video DisplayPort/Thunderbolt
Audio Stereo speakers, headphone jack
Data 2 USB 3.0
Networking 802.11ac Wi-Fi, Bluetooth
Optical drive None

Specification

The 11-inch MacBook Air 2013's chassis is almost totally unchanged from last year's model. The only difference is a second microphone hole in the left-hand side, with the dual mic setup using adaptive beam forming to reduce background noise. But there seems little reason for Apple to change such a popular and practical design.
At just 17mm (0.68 inches) at its thickest point and weighing just 1.08kg (2.38lbs), it's so light and portable it's easy to forget it's in your bag. It's sturdy too. If you lift it by the corner it doesn't creak and flex like lesser, cheaper notebooks, and little luxuries such as the multi-touch trackpad, backlit keyboard with ambient light sensor, magnetic power plug, stereo speakers and the 720p FaceTime HD camera are retained.
The changes to the 2013 11-inch MacBook Air are all under the hood. The off-the-shelf processors are 1.3GHz dual core Haswell Intel Core i5s, though you can upgrade it to a 1.7GHz dual-core Intel Core i7 using the custom options on the online Apple Store.
11-inch MacBook Air 2013 review
Haswell processors, the fourth generation of Intel's Core series, are designed from the ground up to use significantly less power than before, without compromising on performance. Indeed, their integrated Intel HD Graphics 5000 chipset gives up to 40% faster graphical power.
The new MacBook Airs also feature the latest Wi-Fi protocol, 802.11ac. When used with a wireless ac router such as Apple's new AirPort Time Capsule and AirPort Extreme, your wireless connection is up to three times faster than Wi-Fi n, and boasts a much better range. Also, beam forming technology focuses the Wi-Fi signal onto connected ac devices, for a much more stable connection.
One thing the new MacBook Air didn't get is a Retina screen. High-resolution Retina displays, already an option in the MacBook Pro range, have such a high pixel density that the human eye is unable to distinguish between pixels at normal reading distance.
11-inch MacBook Air 2013 review
Many expected it at least as an option in the 2013 MacBook Airs, but it's not to be. The display we get is 1366 x 768 resolution, beautifully consistent and blessed with excellent viewing angles, but it isn't Retina.
At 128GB and 256GB respectively, the two 11-inch MacBook Airs have twice the storage they had before, and they use faster flash too; it's up to 45% quicker than the previous generation, and around nine times as fast as a regular notebook's hard drive.
If you need more, you can upgrade the higher-end 11-inch MacBook Air's storage to 512GB using the online custom options. Like the previous generation, all the new MacBook Airs offer 4GB of RAM off the shelf, which is upgradeable to 8GB. The RAM is soldered to the logic board and is not user-upgradeable, so if you want more than 4GB, best use the online custom options.
11-inch MacBook Air 2013 review
As before, the 11-inch MacBook Airs have two USB 3.0 ports and a Thunderbolt port, though again there's no SDXC card reader, as enjoyed by the 13-inch models. Like all new Macs, the 2013 MacBook Airs come supplied with OS X 10.8: Mountain Lion, and also Apple's popular iLife suite.

Price and configurations
The Air has gotten less expensive than last year by roughly $100 on all configurations, although the entry price is still $999. However, unlike the piddling 64GB SSD you got before, the base Air now has a very acceptable 128GB. Last year, a similar configuration would have cost $1,099.
The step-up $1,199 Air doubles the storage to 256GB. Beyond that, you can also upgrade to a faster dual-core Core i7 processor, and increase the RAM to 8GB and storage to 512GB, just like last year. But these upgrades also cost less: the fully loaded 11-inch Air, which cost an absurd $2,149 last year, now costs a slightly less ridiculous $1,749.
The advantage of going 11-inch over 13-inch is that most of these RAM/CPU/storage configurations end up totaling $100 less on average than the 13-inch version, even though both sizes use exactly the same processors and memory/storage.
Sarah Tew/CNET
Performance and connections
What's new here? New fourth-gen Intel Core i5 and i7 processors, and faster 802.11ac Wi-Fi , a faster standard than 802.11n that's appearing in PCs and wireless routers. You'll need an accompanying 802.11ac router, like Apple's new Time Capsule and AirPort Extreme , though.
Sarah Tew/CNET
The processor change is a lateral move in terms of performance, effectively. The slower-clock-speed 1.3GHz Core i5 in this year's Air gives very similar performance to last year's 1.8GHz, and in some cases, a slightly slower benchmark.
Graphics performance, however, has increased. Not all fourth-gen Intel processors have the same integrated graphics, and the Intel HD 5000 graphics in the Airs are a touch better than the ultrabook average. There aren't as many great Mac games for benchmarking as there are on Windows, but the dated Call of Duty 4 ran at 41.5 frames per second compared with last year's 29.5 frames per second, at the same native 1,366x768-pixel resolution. Diablo III, with graphics settings on high, ran around 27 frames per second. The point is: this tiny Air should play everyday games better than you thought, but it's not designed to be a killer gaming laptop.
The good news for 11-inch adopters is there's no performance downgrade from the 13-inch: they're now using the exact same CPU (and the 11-inch Air is $100 less expensive).
You won't be using that charger much.
BenchmarksXbench, CPU and storage: 347.7
Cinebench 10 Single core: 4,246
Cinebench 10 Multi-core: 8,616
iTunes encoding (USB SuperDrive): 451 seconds
Movie encoding (iMovie): 243.2 seconds
Doom 3: 69.6fps
Call of Duty 4: 69.3fps
Battery, iPlayer test: 7 hours, 15 minutes
Novabench, Total: 593
Novabench, Graphics: 44
The new Intel HD Graphics 5000 chipset proved its worth when running Call of Duty 4, increasing the previous model's 59 frames per second to a snappier 69.3fps, a significant increase.
11-inch MacBook Air 2013 review
But the older Doom 3 seemed less able to take advantage of the superior graphics, and actually slowed from 81.9fps to 69.6fps. Unfortunately, the new 11-inch MacBook Air is also significantly slower at video rendering, taking 243 seconds to re-encode our test video to iPod format. This is 26 seconds down on last year's model.
The MacBook Air's deep sleep mode means you can leave it on with the lid closed for around a month on a single charge, during which time it wakes from sleep in around one second. It's like having an iPad's always-on convenience in a notebook. Not that it takes long to boot when switched off. In our tests, a clean install of Mountain Lion booted in just 18.5 seconds.
And naturally, the battery life is incredible. Apple tells us the 11-inch MacBook Air 2013 can last for up to nine hours on a single charge, and play back iTunes videos for up to eight hours.
11-inch MacBook Air 2013 review
In our test, we set the screen brightness to around 50% and streamed the news channel on BBC iPlayer for an amazing seven hours, 15 minutes. This is more than double what its 2012 counterpart could manage.
You can comfortably use a 2013 MacBook Air all day without recharging, regardless of what you throw at it.

Battery
Does doubling your battery life sound good? Yeah, it better. The 11-inch Air lasted an extremely impressive 10 hours and 37 minutes in our video playback battery-drain test, whereas last year's 11-inch Air lasted 5 hours and 17 minutes. That's a mammoth leap.
The Air has entered iPad-level battery life territory. That's no small moment in computing. It means we've finally reached a point where you can charge up, leave the house for the day, and basically not worry. Live-blogging from press conferences will never be the same.
I used the Air over a long weekend and found its quick-wake time instantaneous and its battery life extremely good, although not always as stupendous in real-world use as the benchmark suggests. I downloaded an 8GB game (Diablo III) while working, streaming video, and doing other things over the course of an evening and used about 50 percent of the Air's battery. That's heavy use. But even then, it shows how you have to really work to deplete the new Air batteries. Writing this review in a coffee shop over an afternoon, I used about a third of the battery (while charging my iPhone via Lightning, too). Fully recharging from empty to 100 percent via the MagSafe 2 AC adapter took a little less than 2 hours.
The 13-inch Air has an even better battery (a whopping 14 hours), but I'd argue that anytime you cross over 8 hours you're in a territory that's all gravy afterward. You're looking at a laptop that can get through a full workday.
Sarah Tew/CNET
But, I'll repeat what my colleague Dan Ackerman said about the 13-inch Air: now, before you get too excited, there are a few caveats for that number. Much of the credit must go to Intel's fourth-generation Core i-series platform, which was pitched as being incredibly power-efficient. Our early tests confirm this, with the new 13-inch Sony Vaio Pro 13 running for nearly 9 hours. And, while this is a much better score than last year's Air got, the CPU itself runs at a lower clock speed, and the new Intel chips are especially optimized for video playback, which is the heart of our battery test. Using Wi-Fi and Bluetooth heavily, or playing 3D games, would cause that number to drop.
But lest we forget how good these are: the new diminutive Sony Vaio Pro 11 only lasted 5 hours and 56 in the same test. Sony sells a separate extended battery for $149 to double that up, but with the 11-inch Air, you're getting close to doubling that without any battery pack at all.
The point is this: the Air met and actually exceeded Apple's 9-hour battery claim. If you crave long battery life in a laptop, this is your golden moment.

Source
Engadget Apple MacBook Air 11-inch Reviews (Critic Reviews 8.8/10, User Reviews 9.1/10)
PC Mag  Apple MacBook Air 11-inch Reviews (4/5)
Techradar Apple MacBook Air 11-inch Reviews (4/5)
CNET Apple MacBook Air 11-inch Reviews (CNET Editor's Rating 4/5, Average User Rating 4.5/5)
The Good The new 11-inch MacBook Air manages a phenomenal 10-plus-hour battery life; base $999 model finally has 128GB SSD; still compact and comfortable to use.
The Bad New CPUs don’t really boost performance over last year’s Air; still lacking SD card slot; 11-inch display’s not as high-res as competitors'.
The Bottom Line Apple’s new 11-inch Air goes a conservative route in 2013, emphasizing longer battery life and more affordable pricing over any big design changes. The battery boost alone might be worth it.

Where to Buy
 
Apple's often imitated but never bettered ultra-portable laptop puts in a strong, though not faultless, performance with this mid-2013 release, the sixth-generation of the MacBook Air.
It offers significant improvements in its solid state storage speed, graphical power, battery life and wireless capabilities, but the processor's clock speeds actually take a backward step. But as we'll see, for most real-world applications, the MacBook Air 2013 matches or out-performs its predecessor.
Like most recent MacBook Air refreshes, the mid-2013 update brings us four new models; two with 11-inch screens and two with 13-inch displays. All use Haswell 1.3GHz Intel Core i5 dual-core processors, replete with Intel HD Graphics 5000, the latest version of Intel's integrated graphics chipset. They also all run the OS X 10.8 Mountain Lion operating system, although this will change to OS X Mavericks when available.
The cheaper model in each of the two screen sizes has 128GB of solid state storage, the more expensive version has 256GB, and all offer 4GB of RAM.
The version on test here is the top-of-the-range 256GB 13-inch MacBook Air, which costs £1,129 / US$1,299 / AU$1,449. The lower specced 128GB 13-inch model is £949 / US$1,099 / AU$1,249.
If your budget won't stretch that far - or if you just want a smaller model - the 11-inch MacBook Airs are priced at £849 / US$999 / AU$1,099 for the 128GB version and £1,029 / US$1,199 / AU$1,349 for 256GB of storage.
While the quality of the MacBook Air isn't in question, not everyone is prepared to pay so much for a light, carry-around notebook. For those on a budget, Chromebooks offer good value for money, as long as they meet your needs.
13-inch MacBook Air 2013 review
Eschewing OS X, Windows and Linux for Chrome OS, these run web-based applications and can be bought very cheaply. For example, the Samsung Chromebook cost just £230 / US$330 / AU$320 at launch.
More expensive Chrome-powered notebooks are available too, though. Google's own Chromebook Pixel is a gorgeous high-end notebook costing £1,050 / US$1,300, which is more than either of the two 11-inch MacBook Airs in the mid-2013 refresh, but it proves cloud computers can be as stylish and desirable as an Apple notebook.
If you want a Windows 8 ultra-portable notebook, the Samsung Series 9 NP900X3D has an Intel Core i5 processor, a 13-inch screen and 128GB of flash storage like this MacBook Air. If you prefer Windows to OS X, the Lenovo ThinkPad X1 Carbon Touch is one of the thinnest and lightest Windows 8 netbooks on the market, and a very credible alternative to the MacBook Air.
13-inch MacBook Air 2013 review
People who want a Mac but need a lot of processing power, such as video editors, gamers and graphic artists, might be better off with a MacBook Pro or an iMac. But the MacBook Air is fine for everyday computing, and perfect for business travellers and regular commuters.

We've previously tested Haswell chips in a few laptops and been impressed by both the performance and battery life gains (to be realistic, the latter is much more important for consumers). If you add Haswell to Apple's already-stellar battery life reputation, you get a system, in the 13-inch Air, that Apple claims will run for up to 12 hours, and in our tests (spoiler alert) ran even longer.

Sarah Tew/CNET
Having a Haswell-generation CPU also gives you Intel's improved HD5000 graphics, which promises improved game performance over last year's HD4000 graphics (itself an improvement over the preceding HD3000, and so on). It's still not anything like having a discrete GPU, as in the 15-inch Retina Pro , but with game services such as Steam and EA's Origin now being Mac-compatible, it may make some small inroads for OS X gaming.
Also new is 802.11ac Wi-Fi , a new standard that will eventually be found in wireless routers, as well as Apple's new AirPort Extreme and AirPort Time Capsule hardware. If you have an 802.11n router, which is a much more likely scenario, this may not help you, but it's a nice piece of future-proofing. Apple also says the solid-state-drive storage included in the Air laptops is now faster, although I think bumping the base $999 11-inch model up to a full 128GB of SSD storage (from the paltry 64GB previously sold at that same price) is a much more important development.

Sarah Tew/CNET
It's easy to say that this new version of the 13-inch MacBook Air is a modest step forward, with no physical changes to the exterior, and still no higher-res display, touch screen, or HDMI port. The battery life is a very big deal, however, and when you couple that with a $100 price cut on the base model, down to $1,099, the 13-inch MacBook Air is, despite not being the newest design on the block, still one of the most universally useful laptops you can buy.

Design and features
The MacBook Air keeps the same external look as the previous couple of generations, a look that still rivals the newest ultrabooks, although some new systems, such as Sony's Vaio Pro line , are getting thinner and lighter without sacrificing much in the way of productivity.
Both the 11-inch and 13-inch versions of the MacBook Air still have the same thickness, ranging from 0.11-inch to 0.68-inch. Spread over the larger footprint of the 13-inch chassis, the 13-inch version still feels satisfyingly thin.

The Vaio Pro 13 next to the 13-inch MacBook Air. Sarah Tew/CNET
As with the previous version, the rigid aluminum construction makes the Air feel sturdy enough to just throw it in a bag and carry along with you without a protective case or sleeve, and it's interesting to contrast the aluminum unibody construction here with the lighter carbon fiber in the aforementioned Vaio Pro. I'd still trust the Air and its unyielding lid more in a throw-in-your-luggage field test.

The backlit keyboard and trackpad are the same as on the previous models, and the trackpad especially remains the standard by which all others are judged. Many other laptop makers have moved to larger clickpad-style touch pads, but we have yet to find a touch pad that comes close to this for multitouch gestures. The pad is again hinged at the top, allowing the entire pad to click down, and we strongly suggest going into the Preferences menu and turning on all of the tapping options for further ease of use.

It will be interesting to see how Apple's user interfaces develop in the face of both Windows 8, which tries (not terribly successfully) to reinvent the entire concept of working with a computer OS, and the upcoming OS X Mavericks update . For now, flicking around with three-and-four-finger gestures on the MacBook trackpad remains the most seamless way to swap between windows and applications, at least in my experience.
Unlike on the 11-inch MacBook Air, the 13-inch screen is still not a 16:9 display. The screen area also lacks the edge-to-edge glass over a black bezel found in the MacBook Pro; instead the screen is, as in previous years, surrounded by a thick silver bezel.
On the positive side, the native resolution of the display is 1,440x900 pixels, which is better than the 1,366x768 you find in many 13-inch laptops, although even midpriced models are quickly switching over to 1,600x900 or even 1,920x1,080. Of course the Retina Pro models, along with a handful of laptops from Toshiba, HP, and Dell, are experimenting with even-higher-than-HD resolutions.
While the Air screen isn't flat matte, it's also not terribly reflective, which is a step up from the "mirror image" effect you get on some laptop screens.


Apple MacBook Air (13-inch, June 2013)
Video DisplayPort/Thunderbolt
Audio Stereo speakers, headphone jack
Data 2 USB 3.0, SD card reader
Networking 802.11ac Wi-Fi, Bluetooth
Optical drive None

Connections, performance, and battery
The ports and connections remain unchanged on this version of the MacBook Air. That gives you two USB 3.0 ports and a Thunderbolt port to play with, with the latter used for both external accessory and video connectivity. The faster 802.11ac Wi-Fi will play nice with Apple's own upcoming new AirPort Extreme and AirPort Time Capsule hardware, but I suspect you're still working off an 802.11n router. There's more on what 802.11ac means for you here .

Sarah Tew/CNET
The base configuration for the 13-inch Air now costs $1,099, versus $1,199 previously. Most of the system is unchanged, with the main difference being the new Haswell-generation Intel processor and platform. Interestingly, last year's base model CPU was a 1.8GHz dual-core Intel Core i5, while the newer Haswell version is a 1.3GHz Intel Core i5-4250U. The step-up $1,299 configuration keeps the same CPU as the $1,099 one, but doubles the SSD to 256GB. 
Benchmarks
Xbench: 357.50
Cinebench 10 Single core: 4242
Cinebench 10 Multi-core: 8636
iTunes encoding (USB SuperDrive): 452 seconds
Movie encoding (iMovie): 242.6 seconds
Doom 3: 68.9fps
Call of Duty 4: 67.8fps
Battery: 9 hours
Novabench, Total: 589
Novabench, Graphics: 44
Although the processors have a slower clock speed than the previous generation, across-the-board performance improvements mostly make up the difference.
The faster graphics enjoyed by the Haswell processors meant that in our Call of Duty 4 test, the 2013 13-inch MacBook Air ran the game at 67.8 frames per second, compared to 59.5fps for the 13-inch, 1.8GHz dual core Intel Core i5 model from 2012.
13-inch MacBook Air 2013 review

Battery life is where the new MacBook Air (both the 11-inch and 13-inch versions) really stands out. The previous-generation 13-inch Air ran for 7 hours and 27 minutes in our video playback battery drain test. The 2013 version blows that out of the water, with an astonishing 14 hours and 25 minutes on the same test. That's better than Apple's estimate of 12 hours, and one of the only times our tests have indicated longer battery life than a manufacturer's claims.
Now, before we get too excited, there are a few caveats for that number. Much of the credit must got to Intel's fourth-generation Core i-series platform, which was pitched as being incredibly power-efficient. Our early tests confirm this, with the new 13-inch Sony Vaio Pro 13 running for nearly 9 hours. And, while this is a much better score than last year's Air, the CPU itself runs at a lower clock speed, and the new Intel chips are especially optimized for video playback, which is the heart of our battery test. Using Wi-Fi and Bluetooth heavily or playing 3D games would cause that number to drop.
But even keeping those factors in mind, Apple's typically stellar battery achievements and Intel's new Haswell chips have combined to make this a truly all-day laptop.

Source
Engadget Apple MacBook Air 13-inch Reviews (Critic Reviews 8.8/10, User Reviews 9.0/10)
Techradar Apple MacBook Air 13-inch Reviews (Design 4/5, Features 4/5, Perfomance 4/5, Usability 5/5, Value 3/5)
PC Mag Apple MacBook Air 13-inch Reviews (4.5/5)
CNET Apple MacBook Air 13-inch Reviews (CNET Editor's Rating 4/5, Average User Rating 4.5/5)
The Good New Intel fourth-gen CPUs help the updated MacBook Air achieve amazing battery life. The multitouch trackpad is still the industry's best, and even better, the 13-inch MacBook Air now starts at $100 less than the previous model.
The Bad Newer features such as touch screens and higher-resolution displays are still missing. The ultrabook competition is catching up, in terms of design.
The Bottom Line Apple keeps the latest MacBook Air updates on the inside, but greatly improved battery life and a lower starting price make up for a lack of flashy design changes.
Official Website

Where to Buy
$1,099.00 - $1,299.00 Apple Store 13-inch MacBook Air
$1,099.99 Ebay Apple MacBook Air 13.3" 4GB RAM, Core i5, 1.3 GHz, 128 SSD (June 2013)*free shipping
$1,048.99 Amazon Apple MacBook Air MD760LL/A 13.3-Inch Laptop (NEWEST VERSION)*free shipping
$1,259.00 Amazon Apple MacBook Air MD761LL/A 13.3-Inch Laptop (NEWEST VERSION)*free shipping

 
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