Apple's 2010 MacBook Air (11 & 13 inch) Thoroughly Reviewed
by Anand Lal Shimpi on October 26, 2010 10:08 PM EST- Posted in
- Mac
- Apple
- MacBook Air
- Laptops
The Battery Life
Light Web Browsing
Here we're simply listing to MP3s in iTunes on repeat while browsing through a series of webpages with no flash on them. Each page forwards on to the next in the series after 20 seconds.
The display is kept at 50% brightness, all screen savers are disabled, but the hard drive is allowed to go to sleep if there's no disk activity. The wireless connection is enabled and connected to a local access point less than 20 feet away. This test represents the longest battery life you can achieve on the platform while doing minimal work. The results here are comparable to what you'd see typing a document in TextEdit or reading documents.
As glorified typewriters, you can’t beat the battery life offered by the MacBook Air. Light web browsing, document creation and music playback have minimal impact on the Air’s battery life. In fact, we actually beat Apple’s battery life claims in our light tests. The 11-inch Air delivers nearly 7 hours on a single charge and the 13-inch managed 11.2 hours. For a writer, you can’t do better than this.
Flash Web Browsing
The test here has three Safari windows open, each browsing a set of web pages with between 1 - 4 animated flash ads per page, at the same time. Each page forwards onto the next after about 20 seconds.
As always, the display is set to 50% brightness, audio at two bars, screensaver disabled and the hard drive is allowed to go to sleep if idle. The wireless connection is enabled and connected to a local access point less than 20 feet away.
If you use the MacBook Air as a full function P...err Mac, the battery life drops steadily. In our Flash web browsing test battery life dropped to 4 - 5 hours depending on which Air you’re looking at. And the difference between the two isn’t all that great. The 13-inch only managed an extra 30 minutes of battery life.
Multitasking Battery Life
Our final battery life test is the worst case scenario. In this test we have three open Safari windows, each browsing a set of web pages with between 1 - 4 flash ads per page, at the same time. We're also playing an XviD video in a window all while downloading files from a server at 500KB/s.
Our heavy multitasking test is the biggest issue. Neither MacBook Air was able to deliver more than 3 hours of battery life on a single charge. The problem here isn’t just battery capacity but also the performance of the CPUs themselves. A major component of long lasting mobile battery life is a concept known as rush to idle.
Let’s say we have two CPUs. The first is an ultra low power CPU that only consumes 10W under load, but 0.5W at idle. The second is a high performance CPU that consumes 40W under load and 1W at idle. If it takes the first CPU 5ms to decode a frame of video at 10W but the second CPU can do it in 1ms, the total energy consumed over 33ms is is 0.064J for the first CPU and only 0.036J for the second CPU.
The longer the first CPU is idle, the more its typical and idle power advantages will come into play (hence the results in the light web browsing test). The more CPU bound the workload however, the more the advantage over the second more high performance CPU will disappear. Our heavy downloading/multitasking test is the most CPU bound of all of our battery life tests and the workload is consistent regardless of how fast you execute it. In other words, a faster CPU won’t be able to do more work, it’ll just be able to rush to idle quicker.
The battery life story boils down to your usage model, even more so than with the MacBook Pro. Light users are going to get wonderful battery life out of the new MacBook Air, particularly the 13-inch model. However, if you are the type of user who does a lot of multitasking or if you’re running particularly CPU intensive apps (e.g. Photoshop, iMovie, etc...) then these two notebooks will hardly last you. I suspect this is the distinction Apple is looking to make. If you’re a regular user, just playing around on Gmail and browsing the web then the MacBook Air is all you’ll need. If you are doing any work with your machine however, you’ll want to look towards the MacBook Pro.
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Exelius - Wednesday, October 27, 2010 - link
I don't know any company that will do this -- HP and Dell require you to mail your machine in as well (unless you pay the extra $500 for the "Gold" replacement plans; an option only available on their most expensive "business" machines.) Often you have to remove the HD before you send it off or else yours might get "lost" (along with all the data on it.)Not that it's a great situation to be in; but this is an issue with many more companies than Apple. You'd still be out a machine.
I own an MBP because it was the only machine available with both discrete graphics and better than 3 hours of battery life. The screen is also dynamite. Were there other machines that were cheaper? Sure. But Apple is the only company that makes a machine comparable to the MBP at any price.
khimera2000 - Wednesday, October 27, 2010 - link
M11x has a descreet, and intergrated, and better then 4+ battery life, in home repair (they send out technicions)ill give ya the screen though. mac books do have nice displays.
khimera2000 - Wednesday, October 27, 2010 - link
FYI if you have a Fry's electronics near you, when you get a notebook from them they will give you a loaner laptop till they finish fixing your system. If your paranoid about hardware failing in your system its something to consider.On another note the way that the macbooks are built makes it so that when you drop them you can do serious damage to the internals. Ive seen several MBPs that needed an external disk drive becaus the aluminum mill next to the dvd tray was made to thing and warped to the point where it would scratch any disk going in, or would not be able to load a disk at all.
Roland00Address - Wednesday, October 27, 2010 - link
You only get a loaner if you bough Fry's Protection Plan that they offer not if you get it repaired under a manufacturer warranty (which Fry's will gladly service since they are an authorized repair center for many brands.)I second the aluminum mill being able to be warped it happened with my 08 macbook pro. That said many samsung dvd external drives are so cheap (and work with OS-X). I am seriously considering buying another ssd and a mounting mechanism in my macbook pro and then booting from the ssd.
ajuez - Wednesday, October 27, 2010 - link
According to Anand:"The SSD isn’t in an industry standard form factor, although the connector appears to be either micro or mini SATA. Presumably 3rd party SSD manufacturers (ahem, SandForce partners I’m looking at you) could produce drop in replacements for the MacBook Air SSD."
And... bingo!
http://www.engadget.com/2010/10/27/macbook-air-upg...
"The Air USB 3 Adapter gives you not only a brand-spanking-new 256GB module with a Sandforce SF-1200 controller, but a speedy USB 3.0 flash drive too -- which smartly doubles as the mechanism by which you move your old files over, as you can just transfer everything through the USB port. Once you're done swapping modules, the company says you'll see a 30 percent speed boost over the original drive, with reported transfer rates of 250MB/s on both sequential reads and writes. "
lemonadesoda - Thursday, October 28, 2010 - link
Thanks for the link. Interesting.And matte screens are also available:
http://www.techrestore.com/pr/macbook-air-matte-sc...
All that is missing is an SD card slot
Exodite - Wednesday, October 27, 2010 - link
It's a couple of very interesting machines, to say the least, but seem to suffer from much the same issues as previous generations.That said i'd be a pretty much perfect machine for me if it had;
The traditional backlit keyboard.
AMD's upcoming thin-and-light Fusion chips or an Intel Sandy Bridge ULV.
USB 3.0 and HDMI ports.
Matte screen options.
Maybe the next version, eh?
SlyNine - Wednesday, October 27, 2010 - link
"In practice I found the 2008 13-inch MBA launched applications quicker (short bursts of full clock speed), but after prolonged use or completing CPU intensive tasks it was tough to tell apart from the new 11-inch. What's even more troublesome is that Apple's aggressive clock throttling went relatively undetected until now. This is something I'm going to have to devise tests for and pay more attention to in future reviews. Sneaky, Steve, sneaky."And this isn't the first time, Your Dell XPS 16's throttled like crazzy, and still do.
ipredroid - Wednesday, October 27, 2010 - link
Anand, can 13in MBA run 30FPS on StarCraft 2? I realize this isn't a support forum... sorry for the lazy question. Thanks for the review. I saw the 11in MBA FPS) no 13in MBA :( FPSkhimera2000 - Wednesday, October 27, 2010 - link
it is possible to do SC2. the memory bump would do you well if your considering running starcraft on the Air (RAM is shared with gpu and cpu) since you loose 256 megs of your 2 gigs to the video card and SC2 has a min spec of 2 gigs with a recommended of 4.it has performed respecabaly on the old air on low settings, so you should be able to bump up a couple of settings possibly getting up to medium with this new revision.
but if your looking for 30FPS through i would go for low. with lots of units on the map in some games your system might lock up at the wrong time.