Download OS X El Capitan system requirements




although this is not even a pc, but MAC works like a pc, and osx is good operating system so far

the supported minimum Mac model list includes the following hardware:

    • iMac (Mid-2007 or newer)
    • MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or newer)
    • MacBook Pro (13-inch, Mid-2009 or newer), (15-inch, Mid / Late 2007 or newer), (17-inch, Late 2007 or newer)
    • MacBook Air (Late 2008 or newer)
    • Mac Mini (Early 2009 or newer)
    • Mac Pro (Early 2008 or newer)
    • Xserve (Early 2009)
A common thread is the Mac must have a 64-bit CPU, which is typically an Intel Core 2 Duo or newer processor. Beyond that, the requirements are pretty soft and forgiving.
source here