On your MAC desktop -
click the 'apple' on the top left hand side of your toolbar
click 'About This Mac'
a small screen will open up
click 'More Info'
select 'hardware' and from the drop down list
click 'memory' - you should find the info you need
here is the link for Apple Support and the topic 'memory' http://support.apple.com/kb/HT2353?viewlocale=en_U...