Crucial RAM 64GB Kit (2x32GB) DDR4 2666 MHz CL19 Memory for Mac CT2K32G4S266M

It works well with my 2020 Imac 27.

I ordered this for my brand new 2017, 27-inch iMac, Retina 5K Display, the base model, and I can confirm that it works. I installed this as soon as the iMac arrived at my home without even turning it on first. Now I have 24GB of memory installed, and it runs flawlessly. I definitely recommend this.

Easy install. I am now rocking 40GB in my 27 Imac

THIS IS A REVIEW FOR CT2K16G4S266M Un-buffered PC4-21333 Memory

Installation was easy and effortless. Works well with my 27inch iMac.

This did not work with my late 2013 iMac. Too big. If anyone has a solution please let me know.

Easy to install. System recognizes the new ram instantly on first boot after install. Works great to improve speed and comes in nice packaging. Much cheaper than Apple ram.

No problems yet, Ive used crucial in a dozen computers over the last 20 years without incident.

Perfect!!!

Perfect for the task, but the packaging could be more robust.