Harder, better, faster, stronger: A review of the 27-inch iMac | Ars Technica
Memory RAM 1x 4GB Apple iMac Late 2012 DDR3 1600MHz SO-DIMM | E-OWC1600DDR3S4GB | APPLE \ MEMORY FOR APPLE \ OWC \ APPLE IMAC \ iMac Late 2012 \ iMac 27'' (Late
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iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET