Home / Computers / How much RAM can the 2015 27-inch iMac actually hold?Computers Technology ramseeker macHow much RAM can the 2015 27-inch iMac actually hold?The 2015 27-inch iMac can hold 64 GB of RAM, double Apple’s official 32 GB limit, using four 16 GB 1867 MHz DDR3 SO-DIMMs. Search Amazon As an Amazon Associate I earn from qualifying purchases.Related NotesExploreExploreExplorePrevious How much RAM can the TS-464 support with its memory slot?Next How much Dawn Ultra dish soap should I use per wash?