Apple iMac 2009 2010 2011 Ram Memory 4GB DDR3 PC3-8500 1067Mhz 1 X 4GB Stick | eBay
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Install memory in an iMac - Apple Support
Timetec Hynix IC 8GB KIT(2x4GB) Compatible for Apple DDR3 1067MHz/1066MHz PC3-8500 SODIMM RAM Upgrade for Late 2008, Early/Mid/Late 2009, Mid 2010 MacBook, MacBook Pro, iMac, Mac Mini (8GB KIT(2x4GB)) : Amazon.co.uk: Computers