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

Like most people I ordered the 8GB iMac and self upgraded the ram with this. I only did 16GB for a total of 24GB, if you are considering upgrading just go the full 32GB upgrade. I will most likely purchase the 32GB kit down the road. Install is super easy read some of the other reviews for proper placement if you get a black screen.

I put 64 RAMs in my base Imac desktop and it worked perfectly

After a number of attempts loading this with my iMac purchased in 2019, trying every configuration in combination with the 8 GB factory RAM, allowing well past a minute each time for the computer to start up, I have to concede that this will not work with my computer, and will have to try another brand. (Please note, I attempted setting these in the slots occupied by the factory RAM, I tried placing these and the new RAM adjacent to each other, and flipping everything around. Nothing worked. Maybe I was shipped a dud? Disappointed to have wasted my time on this.)

Besides the wait, everything seems to be A1. I opened the package slapped these puppies in and TA- tothe-DA my iMac recognized them as for increase in speed and longevity I’ll be updating reviews in a couple weeks

It simply works with no problems.

Buy -> Install -> Forget.

Good price for 32gb RAM for my mid 2017 27 iMac. Easy to install into the two open slots, and combined with the factory apple RAM. I now have a total of 40gb. No regrets buying Crucial memory. Much better pricing than OWC for this upgrade.

Works perfect! installed by computer shop in 2020 Mac mini. No problems.

It took moments to install and is working perfectly.

Awesome.