64GB (16GBx4) iMac Memory for 27-inch Retina - 2019 to Current - Models 19.1 20.1 20.2

64GB (16GBx4) DDR4-2666MHz iMac Memory for the 27-inch Retina. 2019 to Current. Model ID 19,1 20,1 and 20,2.The 21.5-inch iMac Models are not user-upgradable.

Contains four (4) 16GB Low Power SO-DIMM memory modules that are specifically designed and SPD configured for the March 2019 27-inch iMac with 5K Retina Display.

This module is compatible with the latest Apple Firmware.


  • Total Capacity: 64GB (16GBx4)
  • Data Rate: 2666MHz
  • Bus Speed: PC4-21300
  • Form Factor: DDR4 Non-ECC, Unbuffered, SO-DIMM
  • No. of Pins: 260
  • Module Ranks: Single Rank, Low Noise 8-Layer PCB
  • Voltage: 1.2V
  • CAS Latency: 17
  • Features: True DDR4 Major Thermal Tested
  • ROHS Certified, Compliant with JEDEC specifications

Watch our installation video:

Click here for Apple's installation guide.

DDR4-2666-SODIMM - 64GB (16GBx4) IMac Memory For 27-inch Retina 2019 Model 19.1