Mavericks Can Be Fountain of Youth for Old Macs
As someone with a reluctance to upgrade his hardware as often as Apple would appreciate, two aspects of OS X 10.9 Mavericks immediately caught my attention: its memory management and its battery-life enhancements. Mavericks makes a number of changes in power management that improve battery life substantially -- even on my old 2009 13-inch MacBook Air.
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