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Apple iMac A1418 i5 2.7 GHz 8GB RAM 1600 MHz DDR3 Intel Iris Pro 1536mb 780 HDD | eBay
4GB Memory Upgrade for MacBook Pro, iMac, and Mac mini
4GB DDR3 PC3-12800S-11-10-F3 1600 MHz Suits Apple iMac 27, 21.5, MacBook Pro | eBay
OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S8GB) at Amazon.com
parts-quick 16GB 2 X 8GB Compatible Memory for iMac 27" inch 3.2GHz Quad Core Intel Core i5 Late 2013 ME088LL/A 1600MHz DDR3 (PC3-12800) SO-DIMMs RAM at Amazon.com
2009 27" iMac Core i7 can take (2x8GB) 16GB DDR3 1600Mhz RAM? | MacRumors Forums
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32GB kit 4x 8GB PC3-12800 DDR3 1600MHz RAM for Apple iMac 204-Pin SODIMM Memory | eBay
Apple iMac 21.5 late 2013 2.7 ghz intel core i5 8gb 1600mhz ddr3 | eBay
32GB kit 4x 8GB PC3-12800 DDR3 1600MHz RAM for Apple iMac 204-Pin SODIMM Memory | eBay