One of the major new features coming to iOS 9 is Low Power mode, which extends your iPhone’s battery life by 3 additional hours.
But Apple had mentioned that it comes at a cost, as the new mode reduces and multitasking activity to extend battery life. When it is turned on features like Mail fetch, Background App refresh, motion effects and animated wallpapers are disabled. However, the impact on performance in Low Power mode wasn’t clear.Geekbench 3 has now been updated to work with iOS 9. So MacRumors carried out some benchmark tests and found that there was a significant performance reduction when the Low Power mode is enabled.
Without Low Power mode activated, an iPhone 6 Plus scored 1606 on the single-core processor test and 2891 on the multi-core processor test. When Low Power mode was turned on, the same iPhone 6 Plus scored 1019 on the single-core test and 1751 on the multi-core test, suggesting there’s a significant performance reduction when Low Power mode is enabled to save as much battery as possible.Results were similar on an iPhone 5s, with performance reduced by about 40 percent. We saw single/multi-core scores of 1386/2511 without Low Power mode and scores of 816/1405 with Low Power mode turned on.We saw single/multi-core scores of 1386/2511 without Low Power mode and scores of 816/1405 with Low Power mode turned on.
In iOS 9, you get a prompt to enable Low Power mode at 20 or 10 percent battery level. You can also enable it via the Settings app by going to the new Battery section.
Since you would enable the feature only in case of an emergency, the reduction in performance seems reasonable. What do you think?
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