Late 2013 iMac review: Faster than before, but the gains over previous models are modest
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Is it possible to upgrade the RAM on an iMac late 2013 21.5? - Quora
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Apple iMac 2013 (Late) 21.5-inch (iMac 14,3) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
Can you upgrade the RAM in the 27-inch iMac? | iMore
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Apple Officially Confirms 21.5” iMac RAM Is Non-User-Replaceable
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
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Install memory in an iMac - Apple Support
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