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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khimera2000 - Wednesday, October 27, 2010 - link
but on the flip side many of those larger notebooks make up for graphic loss with a stronger processer, which these will not be able to compete with, not to mention that although it is using a NV320, it is not the discreet model it is the intergrated model which saps your ram just like a netbook not to mention that you can play movies on a netbook. the point of a hard drive is rather mute since you yourself acknowledge that solid state drives exist on netbooks.to assume that netbooks will stay as slow as there oridional releas is kinda off, since technolagy moves at a fast rate. comparing this system to new systems that are released by other companies there is no where that it fits other than as a netbook since your going for the bottom of the barrel for Nvidia cards, and going for a CPU that can be smacked by a I3 mobile theres nothing coming out slower for PC then this unless you look at netbooks.
with this in mind it still just looks like a netbook performance revision.
appliance5000 - Friday, October 29, 2010 - link
So somewhere in this verbiage you're saying it a really really fast and powerful netbook. Ok - if it makes you happy -OK.Demoure - Wednesday, October 27, 2010 - link
Why must it be under 3 pounds? I can't think of a good reason for requiring a laptop under 3 pounds, other than that you are intentionally being picky so as to show it in a better light. At four and a half pounds you have the m11x, a far superior laptop. It is not thin or light, but it is not thick and heavy. Being a scrawny person myself, I cannot think of a person where the 1.5 extra pounds would be a deal breaker.And I do agree with you, it is not a netbook, unlike what the other replier said. It is powerful enough to do what netbooks cannot. As I describe netbooks, they fall short if you try to do anything other than text-based stuff. Ion blurs the lines a little, I've owned an ion laptop before. It was able to play movies flawlessly, but beyond that it was still limited in a netbook way. However, my m11x, and as the performance of the air is not too far off, are quite competent at a variety of things. Just about the only thing I would use my desktop for, but not my m11x, would be the heavy work of encoding, transcoding, that sort of stuff. For everything else, it really does feel like a full fledged laptop, if not a decent desktop. The processor being the limiting factor of the laptop, it is fast enough for everything reasonable.
tno - Wednesday, December 29, 2010 - link
This might sound slight to you but is reasonably significant to me. I'm a paramedic with a transport service based out of a tertiary care center (large hospital). This is very much a transient job, you are either in an ambulance going from one place to the next or in a helicopter doing the same. I like to keep some essentials with me at all times: food, water, phone charger, phone, reading material, lightweight computing option. Now phone goes in a pocket. Water has its own bottle. The rest has to go in my bag.After making do with a bulky laptop bag I decided I needed something slimmer and more useful. So I now have a 20L day pack from North Face. It has a laptop compartment/hydration bladder sleeve, and two water resistant compartments, as well as a few smaller pockets and a rain cover for real wet work. And it ways about 1/4 pound. It's amazing, especially compared to my old two pound bag that was bulky while not actually carrying much more stuff.
Food (two Power bars, a PBJ, an apple and some dried fruit/nuts) is about 1 1/2 lbs. Reading material is about 1/2 lbs. Phone charger's a few ounces. So that's about 2 1/2 lbs, including the bag. A 4 1/2 lbs laptop would bring me up to seven pounds. My Lenovo S10 with a 9 cell battery weighs about 3 lbs and having put both used that and my old Dell 15" lappy (about 4.5 lbs) I was much happier with the S10. One handed transitions from one place to another without having to close the laptop is one maneuver that definitely favors the S10 and one I do a lot.
As much as I'm bumping up all these Mac posts I'm going to start to sound like quite the fan boy. That said I still don't own one. And am having trouble making up my mind on which one to buy. The 13MBA and 13MBP vary by just enough to make the MBP's performance equally as tempting as the MBA's lightness. What a travesty of options.
omega12 - Wednesday, October 27, 2010 - link
Did you just compare the power consumption of an unplugged laptop vs a plugged in laptop? The photo on the left says 0W DC Input and on the right we have 22.97W DC Input. What's up with that?Anand Lal Shimpi - Wednesday, October 27, 2010 - link
Cropped the wrong screenshot, the actual processor power consumption doesn't change when plugged in vs. not in OS X but I ran the test both ways just to be sure.Fixed :)
Take care,
Anand
QChronoD - Wednesday, October 27, 2010 - link
Did you guys test the battery life for the air while running windows? Did I miss it on the charts?I need to replace my old laptop w/ something small so I can carry it all day at school. I don't need lots of power, but most of the software I need to use in lab don't run on OSX (AFAIK).
Anyone know anything else for about $1K that is as thin and light and runs for 4+ hours??
JMS3072 - Wednesday, October 27, 2010 - link
Try the ThinkPad X201.kavanoz - Wednesday, October 27, 2010 - link
You can also check Acer Aspire TimelineX AS1830T-3721. Just make sure to swap out the HDD with a SDD. I put a 40 GB Intel X25-V when I bought it and it just flies. Nowadays a 64 GB Sandforce based SSD makes more sense. You can find them for as low as $120.Demoure - Wednesday, October 27, 2010 - link
Compare it to a netbook and you will be delighted at how speedy and thin it is. Compare it to the ipad and well.. okay so the ipad is a bit silly no matter the comparison. Compare it to asus's UL series, and there you have a decent comparison. Thats one where it could really go either way, based on personal preference and which camp you side with. But when the new air launched, I wondered why a reasonable person would want it over an m11x. It is thinner, certainly.. but, is that really important? No laptop these days is really the thickness of a brick, to judge size, you would think people would be more concerned about length and width. Screen size. How thin the air is.. seems like it would never factor in to any situation. Places where an air can fit, a culv-type laptop would as well. If not for it being thin, I really can't think of a reason to get it over the m11x. Neither are really BAD buys, but the air just seems less impressive in comparison. With the money saved by getting the old r1 (you know, the one with more battery life, cheaper, just as useful, only lacking in its lack of optimus) you could get yourself a fancy ssd, to complete the package. Perhaps I am just baised after finding the m11x to be the perfect little laptop, but despite it being a hideous looking thing, I see no reason to get the air unless you just have to have an apple computer. However if the m11x did not exist, I would not blame anyone for getting an air. It is well rounded.