Factory Original 64GB (2x32GB) Memory Upgrade for 2020 & 2019 Apple iMac 27" w/Retina 5K Display & 2018 Apple Mac Mini DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v RAM Adamanta at Amazon.com
Memory Upgrades for 2019-2020 iMac 27-Inch - Up to 128GB
parts-quick 8GB (2 X 4GB) Kit Memory Module for Apple iMac 27" 2017 5K Retina Display DDR4 2400MHz SO-DIMM RAM at Amazon.com
Corsair Mac Memory 32GB (2X 16GB) DDR4 2666MHz C18Memory Kit at Amazon.com
64GB Memory Upgrade for 2019-2020 Apple iMac (27-inch)
Timetec 32GB KIT(2x16GB) Compatible for Apple DDR4 2666MHz / 2667MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K, Late 2018 Mac Mini (8,1) PC4-21333 /PC4-21300 MAC RAM at Amazon.com
Crucial 32GB 2 x 16GB DDR4 SDRAM Memory Kit For iMac 32 GB 2 x 16GB DDR4 2666PC4 21300 DDR4 SDRAM 2666 MHz CL19 1.20 V Non ECC Unbuffered 260 pin SoDIMM - Office Depot
Amazon.com: A-Tech 8GB RAM for Apple iMac & Mac Mini (2018, 2019 & 2020) | DDR4 2666 MHz SODIMM PC4-21300 / PC4-21333 260-Pin SO-DIMM Memory Upgrade : Electronics
OWC 16GB (2 x 8GB) PC19200 DDR4 2400MHz 260pin SO-DIMMs Memory Ram Upgrade Compatible with 27" iMac w/Retina 5K (Mid 2017) and Compatible PCs (OWC2400DDR4S16P) at Amazon.com
32GB Memory Upgrade for 2019-2020 iMac and 2018 Mac mini
Timetec 32GB KIT(4x8GB) Compatible for Apple DDR4 2666MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K Display PC4-21333 / PC4-21300 CL19 SODIMM Memory MAC RAM Upgrade at Amazon.com
Amazon.com: A-Tech 32GB Kit (2x16GB) RAM for Apple iMac & Mac Mini (2018, 2019 & 2020) | DDR4 2666 MHz SODIMM PC4-21300 / PC4-21333 260-Pin SO-DIMM Memory Upgrade : Electronics
Amazon.com: A-Tech 16GB RAM for 2017 iMac 21.5 inch Non-Retina | DDR4 2133MHz PC4-17000 SO-DIMM 260-Pin CL15 1.2V Non-ECC Unbuffered Memory Upgrade Module : Electronics
Amazon.com: V-Color 64GB (4x16GB) 2666MHz DDR4 Compatible for iMac Retina 5K, 27-inch, 2019 and iMac Retina 5K, 27-inch, 2020 Non-ECC SODIMM Mac Memory Ram Upgrade PC4-21300 CL19 260-PIN 1.2V (TN416G26S819Q-VC) : Everything
16GB Memory for Apple iMac Retina 5K, 27-inch (2020) DDR4 2666 MHz PC4-21300 RAM | eBay
Crucial 8GB DDR4-2400 SODIMM Memory for Mac | CT8G4S24AM | Crucial.com
NEMIX RAM 16GB Memory SODIMM Module DDR4 2400MHz PC4-19200 Compatible with Apple iMac 2017 27-inch w/Retina 5K, 21.5-inch w/Retina 4K / Non-Retina 4K iMac 18,1 / iMac 18,2 / iMac 18,3 at Amazon.com
Amazon.com: OWC 32GB PC19200 DDR4 2400MHz SO-DIMM Memory Compatible with 21.5" and 27" iMac Retina Models (Mid 2017), Mac Mini (Late 2018), and Compatible PCs (OWC2400DDR4S32G) : Everything Else
Amazon.com: V-Color 32GB(2x16GB) 2666MHz ddr4 Compatible for iMac Retina 5K, 27-inch, 2019 and iMac Retina 5K, 27-inch, 2020 Non ecc SODIMM Mac Memory Ram Upgrade pc4-21300 CL19 260-pin 1.2V (TN416G26D819K-VC) : Everything
