Most reputable vendors will make it clear which RAM they offer is compatible with Macs. Some third-party RAM that’s not up to Apple’s specs will cause problems when you upgrade your OS. A word of advice here: If you don’t buy your RAM directly from Apple, be sure you get RAM that’s specifically guaranteed for use in Macs. 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. (Note that while all of the above computers can install Mavericks, some features, such as Power Nap, AirPlay mirroring and extended desktop, and AirDrop, have stricter requirements.)Īpple also says you need at least 2GB of RAM (memory), but in my experience, you’ll enjoy better results with at least 4GB. MacBook Pro 17-inch (Late 2007 or newer).MacBook Pro 15-inch (Mid/Late 2007 or newer).MacBook Pro 13-inch (Mid-2009 or newer).MacBook (Late 2008 Aluminum, or Early 2009 or newer).