what are the system requirements for macos?
['Mac computer with an Intel Core Duo, Core i3, Core i5, Core i7, or Xeon processor.', 'Mac OS X 10.6.6 or later to install via the Mac App Store, an internal or external DVD drive, or install using an OSX Lion USB Thumb Drive.', 'At least 2GB of RAM.', 'At least 7GB of disk space available.']