Upgrade ram in 2015 iMac
Is the ram upgradable in the 21.5” iMac late 2015?
Sadly it is not upgradable! The RAM and the CPU are both soldered to the logic board as you can see here
The Orange marked chips are the RAM and the Red outlined chip is the CPU.
The best you can do is upgrade your storage if you have a HDD replace it with a faster SSD and one with lots of extra space so your OS will leverage it for Virtual RAM.
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