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

Perfect for my needs.

I installed these in my iMac 27 2017, the are running fine so far with stock RAMs

Bought a new iMac because my old one gave out. Purchased the standard 8GB from Apple, and bought this RAM rather than pay Apple twice as much. I took out the 8GB and put in the 32GB before I even turned the new Mac on. Absolutely no issues. Mac powered on with no trouble. The reason I took out the 8GB and simply left in the 32GB was because I read several reviewers who ran Geekbench tests on their systems, testing the 32GB (2 by 16) and 40GB (2 by 8 and 2 by 16) and the single core and multi core scores were higher with the 32GB RAM. Its not much of a difference, but I suggest you run some tests on your system to determine which is faster.

This RAM gave a new purpose to my Asus GL702VSK. 64GB with 2667MHz exactly as described.

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

waiting for new machine to install but everything looks good so far.

Plug and play

Upped RAM in iMac from 8 to 24g. Runs much better!

My 2017 IMAC failed to boot while this memory was installed. I tried moving the memory around to different slots. 1& 2, then 3&4, then 1&3, then 2&4. Nothing worked. I ensured the memory was properly installed. After I removed the Crucial memory the mac now boots properly.

Better than before