Apple iMac (21.5-inch, Late 2015)
Model identifier iMac16,1 All-in-one, from 2015 12 hardware reports
Not upgradable
No. The memory is soldered to the board.
8 GB is built in and there is no slot to add more.
- Free slots
- None
- Type
- DDR3-1866
- Soldered
- 8 GB
- Firmware says
- 8 GB maximum
- How sure
- 10 of 10 reports show this layout
Worked out from 10 hardware reports of this desktop, with Apple's memory specifications for which Macs have sockets. Sources and method. Updated 10 Nov 2026.
All soldered
Illustration Questions
Can I upgrade the RAM in the Apple iMac (21.5-inch, Late 2015)?
No. The memory is soldered to the board. 8 GB is built in and there is no slot to add more.
What type of RAM does the Apple iMac (21.5-inch, Late 2015) use?
DDR3-1866 memory soldered to the board.
Is this my desktop?
On the Mac, choose Apple menu > About This Mac > System Report. The Model Identifier should read iMac16,1.
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