OS X 10.9 Mavericks Software
OS X Mavericks introduces innovative new features, including:
• iBooks, which gives you instant access to your iBooks library, more than two million titles in the iBooks Store™, and works seamlessly across your devices;
• Maps, which brings powerful mapping technology to the desktop and lets you plan a trip from your Mac and send it to your iPhone® for voice navigation on the road;
• A streamlined Calendar that estimates travel time between appointments, and provides a map with weather forecast;
• A new version of Safari with Shared Links, which helps you find what’s new on the web by consolidating links shared by people you follow on Twitter and LinkedIn;
• iCloud® Keychain®, which safely stores your website usernames and passwords, credit card numbers and Wi-Fi passwords and pushes them to your trusted devices so you don’t need to remember them;
• Enhanced multi-display support, which makes using multiple displays easier and more powerful, with no configuration required;
• Interactive Notifications, allowing you to reply to a message, respond to a FaceTime® call or even delete an email without leaving the app you’re using;
• Finder Tabs, which help unclutter your desktop by consolidating multiple Finder windows into a single window with multiple tabs; and
• Finder Tags, a powerful new way to organize and find your files located on your Mac or in iCloud.
Mavericks also includes new core technologies that boost performance and improve the battery life of your Mac. Timer Coalescing and App Nap™ intelligently save energy and reduce power consumption.
Compressed Memory automatically shrinks inactive data to keep your Mac fast and responsive. Mavericks also delivers significant performance enhancements for systems with integrated graphics through optimized OpenCL support and dynamic video memory allocation.
What you need
The new version of OS X supports any Mac that works with Mountain Lion and is already running OS X 10.6.8 or later. That list of compatible models is:
• iMac (Mid 2007 or newer)
• MacBook (Late 2008 Aluminum, or Early 2009 or newer)
• MacBook Air (Late 2008 or newer)
• MacBook Pro 13-inch (Mid-2009 or newer)
• MacBook Pro 15-inch (Mid/Late 2007 or newer)
• MacBook Pro 17-inch (Late 2007 or newer)
• Mac mini (Early 2009 or newer)
• Mac Pro (Early 2008 or newer)
• Xserve (Early 2009)
(Note that while the above computers can install Mavericks, some features, such as Power Nap, AirPlay mirroring and extended desktop, and AirDrop, have stricter requirements.)
Apple also says you need at least 2GB of RAM (memory), but in my experience, you’ll enjoy better results with at least 4GB. If you have only 2GB installed—and especially if you have only 1GB—you should consider a hardware upgrade, if that’s possible with your particular Mac model, before installing Mavericks. A word of advice here: Be sure you get RAM that’s specifically guaranteed for use in Macs from such companies as We Love Macs or MemoryTen. These vendors make it clear which RAM is specifically compatible with Macs.
Similarly, Apple states that you should have at least 8GB of free space on your Mac’s drive to install a major OS X update, but I recommend playing it safe by aiming for 15GB to 20GB—the Mavericks installer itself is 5.3GB in size, and you'll need some room for temporary files.