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

(1121 Reviews)

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$72.59

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(10000 available )

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  • joselito

    > 3 day

    This went into my 2019 5K 27 iMac (the base model for $1799). It came with 8GB of RAM (2 sticks of 4GB each). I took those out and inserted these two in its place, plus I added 16GB more (2 sticks of 16GB each) in the other slots (also Crucial brand). Everything went perfectly and I now have 48GB of very fast RAM, which should last me 3-4 years (based on my needs/usage). The installation was very quick and easy! I dont know why some reviewers are having such a hard time, its compatible all right! Maybe theyre not seating them in correctly?

  • Vinnie

    Greater than one week

    Royal pain to install (not the memorys fault), but can confirm that a pair of 16GB single rank work great on my Retina 4K, 21.5-inch, 2017 iMac, not just the 27 they are advertised for, which has the nice little door on the back.

  • brunooso

    Greater than one week

    Works perfectly in my iMac 2017, 27 inch, 3.8GHz i5.

  • Runn3rsHi

    > 3 day

    100% compatible with 27 2017 iMac

  • Justin Klanke

    > 3 day

    Works just fine on PC too, I knew it would. I am just saying this in case some people were questioning if it would. I bought this instead of regular RAM because it surprisingly was cheaper.

  • JC Alvarez

    > 3 day

    If you have a MAC that allows you to easily swap out the memory RAM like I do, this is the way to go!

  • Richard Garcia

    > 3 day

    I installed this kit (16kb X 2) in iMac/18,3/ 27/i5/3.5kHZ; it took about 5 mins. I placed them in the two empty slots (2&4) and they were recognized immediately. A few days later I switched the new modules with the original ones just to see if there was a difference. I did not use any software to analyze the speed changes if there were any; I could not detect any difference. So, bottom line: new modules are in slots 1&3 (counting from the bottom) and original modules are in slots 2&4 and all is well.

  • John

    > 3 day

    plug and play. Used open dimm slots for the 16gb sticks, did not switch around with existing 8gb (4gbx2) from apple. Performance hit is negligible for my purposes, so not worth the time fiddling. Will be getting another 32gb kit eventually anyway.

  • Jonathan

    > 3 day

    worked perfect on 2017 27 iMac

  • EBU

    > 3 day

    Easy to install following simple instructions. Works just great!

CT2K32G4S266M is a 64GB Kit consisting of (2) 32GB DDR4 SODIMM for Mac that operates at speeds up to 2666 MT/s and has a CL19 latency. It is an Unbuffered SODIMM. It conforms to the industry standard DDR4 SODIMM layout of 260 pins and is compatible with systems that take DDR4 2666 MT/s SODIMM memory.

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