Original post by: remacberlin ,
Open Terminal and type: ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6 It will show you exactly which screen you have. You can also visit http://www.chipmunk.nl/klantenservice/applemodel.html to get information about your mac, entering the s/n. The site is dutch but with english translations provided. There are a lot of different screen specs on the MBP range which are not always interchangeble.