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

Installed this to bring the total memory in iMac up to 40GB and it was very simple and works perfectly. Definitely notice a difference when running multiple programs at the same time. Was worth the price IMO.

No issues, easy install and works with 2019 iMac

Works like a charm for my 27 iMac (2017). Just make sure you install them properly by moving your 2 existing factory rams down a slot, and insert your 2 new ram sticks where the factory ones were. I got a black screen for 10 seconds when I started the iMac after the install and thought I installed it wrong, but relalized it was just the computer initializing the new ram.

Easy install, easy update, and even got it to 40 GB of RAM. Bravo Crucial!

Installation took less than 3 minutes . I have a 2017 iMac 3.8 ghz and I inserted the ram in the open slots , did not move the original Mac ram at all . Closed the back up , hit the power button and it took about 30 seconds to boot up and recognize the the memory and like magic there was the apple logo on the screen .

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

I bought this for my 2017 iMac and it works beautifully.

This RAM kit was much cheaper than buying the upgrade via Apple and got me more total RAM than offered by the factory. Install was extremely easy on my iMac.

Fast and easy install, great quality.

I HAVE BUILT MY OWN COMPUTERS FOR YEARS FROM SCRATCH, THEN I GOT SMART SEVERAL YEARS AGO AND CAME TO THE DARK SIDE. IM ON MY 2ND IMAC. ONLY BECAUSE I WANTED BIGGER AND BADDER. PURCHASED THIS RAM FOR IMAC27 THAT I PURCHASED IN DECEMEBER AND HERE IS HOW IT WENT. POWER OFF, UNPLUG EVERTHING, LAY SCREEN DOWN ON TOWEL, OPEN AMAZON PACKAGE. INSPECT RETAIL PACKAGING, OPEN IMAC COVER PLATE, OPEN TO LATCHES, ROTATE TOWARDS ME, SLIDE RAM IN PLACE, PRESS FIRMLY TO ENSURE SEATED, ROTATE LEVERS TILL BACK ENGAGED, REINSTALL COVER PLATE, PLUG ALL PLUGS BACK IN, POWERUP (TOOK JUST A BIT LONGER), AFTER BOOT CLICK APPLE AND THEN ABOUT THIS MAC, CLICK MEMORY. DONE DEAL IN UNDER 15 MINUTES. WOULD BUY IT AGAIN ALL DAY EVERYDAY.