OS X Mavericks System Requirements

1:-must have a 64-bit Intel CPU

2:-10 GB of storage 

3:-4 GB+ Ram

OS X Mavericks Supported apple Hardware List

iMac (Mid-2007 or later)

MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later)

MacBook Pro (13-inch, Mid-2009 or later), (15-inch, Mid/Late 2007 or later), (17-inch, Late 2007 or later)

MacBook Air (Late 2008 or later)

Mac Mini (Early 2009 or later)

Mac Pro (Early 2008 or later)

Xserve (Early 2009)