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

works great, recognized immediately. ZOOM!

This worked perfectly with my new 2017 5K Imac. Thanks!

Easy install and made a huge improvement to my computer.

great performance!

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.

It’s the best, very easy to install....

Works great for my IMAC. Easy to install and recognized immediately. Great value.

Received on time, work perfectly with my iMAC 2017 27inch 5K

Took some re-arranging of the RAM slots - but works perfectly.

I just returned the OWC 128gb RAM and purchase this one. No kernel panic again. I am so Happy.