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A-Tech 8GB RAM for Apple iMac 2017 (27 inch Retina 5K & 21.5 inch Retina 4K) | DDR4 2400MHz SODIMM PC4-19200 1.2V 260-Pin SO-DIMM Memory Upgrade Module at Amazon.com
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YouTuber upgrades base-model 5K iMac with seventh-gen Intel Core i7 processor, 64 GB of RAM, and more [Video] - 9to5Mac
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