Can the RAM be upgraded in the iMac 27-inch (2015)?

Yes. The iMac 27-inch (2015) has a user-accessible RAM compartment behind a door on the back. It supports up to 32GB (4x8GB) of 1867MHz DDR3 SO-DIMMs, though some users have successfully installed 64GB (4x16GB) with third-party modules.

Report 011885. Filed.