![How to upgrade the memory of a 27-inch iMac with Retina 5K display (Late 2014 - Mid 2015) iMac15,1 - YouTube How to upgrade the memory of a 27-inch iMac with Retina 5K display (Late 2014 - Mid 2015) iMac15,1 - YouTube](https://i.ytimg.com/vi/1nQp_Yb8YW0/maxresdefault.jpg)
How to upgrade the memory of a 27-inch iMac with Retina 5K display (Late 2014 - Mid 2015) iMac15,1 - YouTube
![OWC 16GB (2 x 8GB) PC14900 DDR3 1866MHz SO-DIMMs Memory Compatible with 2015 (Late) iMac 27" w/Retina 5K Models and Compatible PCs (OWC1867DDR3S16P) at Amazon.com OWC 16GB (2 x 8GB) PC14900 DDR3 1866MHz SO-DIMMs Memory Compatible with 2015 (Late) iMac 27" w/Retina 5K Models and Compatible PCs (OWC1867DDR3S16P) at Amazon.com](https://m.media-amazon.com/images/I/81cwewP9efL.jpg)
OWC 16GB (2 x 8GB) PC14900 DDR3 1866MHz SO-DIMMs Memory Compatible with 2015 (Late) iMac 27" w/Retina 5K Models and Compatible PCs (OWC1867DDR3S16P) at Amazon.com
![CMS 32GB (4X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Retina 5K 27-Inch (Mid 2015) Mf886Ll/A - A6 at Amazon.com CMS 32GB (4X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Retina 5K 27-Inch (Mid 2015) Mf886Ll/A - A6 at Amazon.com](https://m.media-amazon.com/images/I/71zgz0dAVbL.jpg)
CMS 32GB (4X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Retina 5K 27-Inch (Mid 2015) Mf886Ll/A - A6 at Amazon.com
![Apple iMac 5K Retina 27" Desktop - 3.3GHz Quad-Core i5 - 24GB RAM - 1T – The Refurbished Apple Store Apple iMac 5K Retina 27" Desktop - 3.3GHz Quad-Core i5 - 24GB RAM - 1T – The Refurbished Apple Store](https://cdn.shopify.com/s/files/1/0050/1589/6153/products/Apple-iMac-5K-Retina-27-Desktop-33GHz-Quad-Core-i5-24GB-RAM-1TB-HDD-AMD-Radeon-R9-M290-2GB-2015-Silver-3_a748b664-b05f-400e-9c3d-42bf9b7f66e1.jpg?v=1629700647&width=1445)