OWC 32GB ( 4x8GB ) PC3-10600 DDR3 1333MHz SODIMM 204 Pin Memory Upgrade kit For Mid 2010/2011 27" iMac Core i5 and Core i7 models & Mid 2011 21.5" iMac models. Model OWC1333DDR3S32S - Newegg.com
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Get Up To 32GB 1867 MHz DDR3 RAM for 27" 5K iMac
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