The 27-inch iMac 2019's RAM may be upgraded to 128GB - NotebookCheck.net News
Amazon.com: A-Tech Kit de 128 GB (4 x 32 GB) RAM para Apple iMac 2019 y 2020 Retina 5K de 27 pulgadas | DDR4 2666 MHz SODIMM PC4-21300 / PC4-21333 260 pines SO-DIMM Max Actualización de memoria : Electrónica
27 inch iMac with Retina 5k Display 2019 3.7GHz i5 2TB SSD 64GB RAM | Refurbished | Techable
Apple iMac 27" (5K 2019) Retina i5 3.0GHz, 6 Core - 16GB RAM, 1TB Fusion - Warranty 6 M | i Apple