How big of a difference between Mid 2011 and Mid 2012 13" MB Air ... How big of a difference between Mid 2011 and Mid 2012 13" MB Air? MacBook Air. ... A co-worker has a MB Air 13" from Mid 2011. It has the .... 13" Late 2011 vs mid 2012, Isamilis, MacBook Pro, 3, May 5, 2014 05:56 AM.
