Mavericks OS X 10.9 review

Apple's yearly software upgrade boosts battery life and security. Best of all it's free.

IT Pro Recommended
  • Free; Massive battery life gains for laptops; Supports machines from 2007; Better file management; Increased sandboxing
  • Most features are consumer focused; iCloud Keychain could prove a security risk in the enterprise

OS X 10.9 Mavericks is the best Mac upgrade Apple has offered. The desktop software introduces a raft of productivity and security features, provides a noticeable bump in battery life and supports models going back to 2007.

Mavericks also marks the first time Apple has offered an extensive Mac update for free.

OS X Mavericks works with

  • iMac (Mid 2007+)
  • MacBook Pro (Mid/Late 2007+) 
  • MacBook Air (Late 2008+) 
  • MacBook (Late 2008 Aluminium, or Early 2009+) 
  • Mac Pro (Early 2008+)
  • Mac mini (Early 2009+)

Mac App Store

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Apple's OS X Server

Apple Remote Desktop

You can install Mavericks onto Macs running older versions of OS X going back to Snow Leopard (OS X 10.6).

Unbeatable Battery

During the launch of Mavericks, Craig Federighi, Apple's VP for software engineering, talked up the battery life improvements the software brings to existing devices.

Battery life increases will vary from model to model, but Federighi stated you should be able to get an extra 60 mins of Wi-Fi browsing and 90 mins of video playback from the 2013 13in MacBook Air.

We found the update added a shade over an hour to the MacBook Air's already impressive 12-hour battery life.

To facilitate this battery improvements on MacBooks, Mavericks introduces two features. The first is timer coalescing', allows the CPU to perform low-level operations together and then return to a low-power resting state as quickly as possible.

At a higher level, there's a feature called app nap'. This suspends apps which may be open but are not being used, reducing the drain on CPU resources.

Thanks For The Memory

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When apps are running in the background, Mavericks uses a feature called compressed memory' to free up resources for other tasks by compressing the data.

Apple has also improved memory management for Macs using Intel's integrated graphics. Mavericks can assign a maximum of 1GB of system memory to the GPU when required, so remaining memory can be used elsewhere.

It's too early to judge the effectiveness of these memory-saving techniques but Apple has never been generous with RAM, so anything helping to increase efficiency is welcomed.

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