OS X Mavericks was released on Tuesday after the Apple iPad event, one of the features that Apple have been touting is that it will improve battery life on MacBooks.
John Siracusa from Ars Technica has published an in depth review of OS X Mavericks, and also revealed some details on battery improvements that the update brought to some MacBooks.
On a 2007 MacBook Pro there was an improvement in battery life of around 20 percent, and on a 2013 MacBook Air there was an improvement of around 30 percent.
I suspect the aggressiveness of the auto-playing Flash ads that happen to be on specific websites on a particular day may partly explain the huge variability in Mountain Lion’s numbers. Some of the lower-scoring Mountain Lion trials may have also had the bad luck to coincide with energy-intensive periodic jobs—jobs that are prevented from running on Mavericks due to AC power or battery-level restrictions as part of centralized task scheduling.
These tests may or may not be representative of how you use your Mac, but regardless, it’s clear that Apple’s efforts have not been in vain. Mavericks really does consume less energy than Mountain Lion when performing the same tasks.
From what we have seen so far, Mavericks has a definite effect on battery life on Apple’s MacBook and MacBook Air range, although we have not conducted any specific tests.
Source Ars Technica, MacRumors
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