The 2011 MacBook Air (11 & 13-inch): Thoroughly Reviewed
by Anand Lal Shimpi on July 28, 2011 3:25 AM EST- Posted in
- Apple
- Mac
- Intel
- Sandy Bridge
- MacBook Air
- Laptops
Thermals & Power Consumption
Both the 11 and 13-inch MacBook Air use the same 45W MagSafe power adapter as the 2010 models. To get an idea of how much power the platform as a whole uses I measured power using the same power brick and a fully charged battery on all three MBA systems (2 new, 1 old). I chose two high-load scenarios: Cinebench R11 and Half Life 2 Episode 2. The former is a purely CPU load while the latter is a good mix of CPU and GPU load.
Peak power consumption has gone up significantly since last year. The 11-inch MacBook Air draws 35% more power under full load compared to its 2010 counterpart. In Cinebench R11 however, the new 11 is over twice as fast as the old one. A 35% increase in max power for a 2x increase in performance? I'll take it.
Overall power consumption isn't too bad. You're looking at under 35W for full load on the 11 and around 40W for the 13. Neither exceeds the maximum power draw of a 13-inch MacBook Pro.
How hot are the new Airs on your lap? For the most part they aren't too bad. Under a light load the fan won't spin up and you won't feel more than 31C on your lap:
It's under load that these things can get warm. If you're just measuring surface temperature then the new 11 can hang with the 15-inch MacBook Pro:
The 11-inch MacBook Air actually has it the worst. With a more cramped chassis things seem to get hotter more quickly in there compared to the 13. However max temperature is no where near as bad as the 15-inch MacBook Pro:
Overall the thermals seem to be in line with a 13-inch MacBook Pro, despite being confined to a much smaller chassis.
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ifyouwanto - Tuesday, August 2, 2011 - link
Hi Anandtech,In your review of the 2010 11" model you commented that the hinge felt a bit loose or weak. Wondering if it is any different on this years model?
Thanks
slatanek - Saturday, September 10, 2011 - link
i have a 13 inch Macbook air i5 2011 and its hinge is rock solid. it feels very assuring :-)cheers
Wskcondor - Thursday, October 13, 2011 - link
I read this review and also the 2011 iMac review. I have a couple of questions someone with the hardware in front of them or with more knowledge may be able to answer...My idea is to travel with the 2011 Macbook Air, with the 1.8G i7 upgrade and 256G SSD.
-I like the Thunderbolt display idea of a dock, because when I am "at home" I do a lot on the computer at the desk and I store a lot externally from the Air (movies, music, photos) and also still use an optical drive regularly. In effect, with a T-Bolt display, all of these things would be hanging off the display.
Then I thought: why couldn't I buy a 2011 iMac and use it as a "display/dock station" when at home?
1) Could I boot the 11" Air into TBolt target drive mode and then BOOT the iMac from the Air's drive, so all the "local changes" would be on the drive I take away on travel with me? The processor would be an i7 also in the iMac. BUT the configuration would be different, of course.
-will this jack up settings in the Air's hard drive when I disconnect and reboot the Air from it's internal processor?
-will this be too slow a configuration because the TBolt target drive mode has such slow throughput that the iMac will crawl along?
-Can I even boot an iMac off the Air's TBolt target SSD drive?
2) Can the iMac become a "Thunderbolt monitor" with drives, ports, etc if I boot the iMac into TBolt target mode? Or would it just be a blue screen with drives and ports, extending my Air's ports, but not acting as an external monitor?
Questions.
thanks to anyone who knows.
Wskcondor