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How To Upgrade RAM in a Mac | Macworld
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
iMac Retina 5K 27-inch, Late 2014 - worth upgrading RAM from 16GB to 32GB? | MacRumors Forums
27-inch iMac teardown shows lack of storage upgrade options | AppleInsider
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iMac with Retina display review: best in class, but not everybody needs one | Engadget
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