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

Imac 27 2020 followed directions in comments for easy install. Works as advertised.

Easy installation, took less than two minutes. Don’t understand other’s frustration from other reviews.

Good price for an easy addition to the iMac. It’s easy to slide into the 27” model. Not sure what installation is like on the 21

Installed additional 32 gb of ram in my iMac and it only took me 5 minutes. Performs as advertised. No glitches. Not my usual results.. could not be happier.

The memory work perfectly with my new 2017 iMac computer. Installed with no issues whatsoever. I went from 8GB (basic) to 24GB.!!

I bought Crucial 32GB Kit (16GBx2) DDR4 2666 for my iMac Retina 5K 2019, removed original ram and placed 3 sticks. first thing what I mentioned boot speed slowed down, I tried to replace to another slots but result is the same.

Working as described

Easy to install and after a month, my iMac is working perfectly and fast.

Easy to install, great value for the money, what else do you need :)

Simple to install the memory into the empty slots on the 27 iMac and you have 40 GBs of Ram. Just make you can feel it pop in. Check the Apple menu, About The Mac, Memory 40GB. Easy and perfect.