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Photoshop, iMovie, etc.) then these two notebooks will hardly last you. 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. Light users are going to get wonderful battery life out of the new MacBook Air, particularly the 13-inch model. The battery life story boils down to your usage model, even more so than with the MacBook Pro. In other words, a faster CPU won’t be able to do more work, it’ll just be able to rush to idle quicker. 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. The more CPU bound the workload however, the more the advantage over the second more high performance CPU will disappear. 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). 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 second is a high performance CPU that consumes 40W under load and 1W at idle.
The first is an ultra low power CPU that only consumes 10W under load, but 0.5W at idle. A major component of long lasting mobile battery life is a concept known as rush to idle. The problem here isn’t just battery capacity but also the performance of the CPUs themselves. Neither MacBook Air was able to deliver more than 3 hours of battery life on a single charge. Our heavy multitasking test is the biggest issue. We're also playing an XviD video in a window all while downloading files from a server at 500KB/s. 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. Our final battery life test is the worst case scenario. The 13-inch only managed an extra 30 minutes of battery life. And the difference between the two isn’t all that great. In our Flash web browsing test battery life dropped to 4 - 5 hours depending on which Air you’re looking at.
#Google backup and sync mac battery full
If you use the MacBook Air as a full function P.err Mac, the battery life drops steadily. The wireless connection is enabled and connected to a local access point less than 20 feet away. Each page forwards onto the next after about 20 seconds.Īs 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.
#Google backup and sync mac battery windows
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. For a writer, you can’t do better than this. The 11-inch Air delivers nearly 7 hours on a single charge and the 13-inch managed 11.2 hours. In fact, we actually beat Apple’s battery life claims in our light tests. Light web browsing, document creation and music playback have minimal impact on the Air’s battery life.
The results here are comparable to what you'd see typing a document in TextEdit or reading documents.Īs glorified typewriters, you can’t beat the battery life offered by the MacBook Air. This test represents the longest battery life you can achieve on the platform while doing minimal work. 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.
#Google backup and sync mac battery series
Each page forwards on to the next in the series after 20 seconds. Here we're simply listing to MP3s in iTunes on repeat while browsing through a series of webpages with no flash on them.
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