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

Install takes literally a minute once you pop the back door of the iMac. Good product with lifetime warranty. Ive bought from Crucial before (Amazons price was lower than buying direct this time!) and will buy again from them when needed.

They do an excellent job.

I just brought a 2017 iMac refurbished 27 with 8 GB of Ram. Crucial RAM 32GB Kit (2x16GB) install in minutes and it made my MAC run incredible. and I purchased it at only$109 on Amazon day.

fast shipping, as described

Works with 2017 4.2 GHz Intel Core 7 27 inch iMac. Easy to install. I ordered my iMac with the lowest memory option of 8GB which was 2 4GB which left me with 2 slots to upgrade. My total is 24GB which has been plenty including using Lightroom 6.

Price was reasonable and installation relatively easy. Bottom line is that it worked.

Good quality

really, how do you write a 2/3/4-star review of something that either works or doesnt?

CT2K8G4S24AM is not the cheapest RAM in the market but they really work. I bought two 8GB sticks for my 5K iMac that already has 16GB RAM. Installation was a breeze! This is what memory upgrade is supposed to be like. I wish I had bought this kit earlier instead of wasting my time trying to get OWC RAM to work.

The Crucial CT2K8G4S266M 16 GB RAM kit arrived quickly. Following instructions I found online, I was able to easily install the RAM. When I booted my Mac, it worked perfectly. Its been running for a week now, with no problems.