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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 9 left in stock, order soon!
Arrives
Monday, Jul 13
Recently Viewed
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
Features
- Improve your system's responsiveness, run apps faster and multitask with ease
- Install with ease; no computer skills required. How-to guides available at Crucial
- Compatibility assurance when using the Crucial System Scanner or Crucial Advisor Tool
- Micron quality and reliability is backed by superior component and module level testing and 42 years of memory expertise
- ECC Type = Non-ECC, Form Factor = SODIMM, Pin Count = 260-pin, PC Speed = PC4-21300, Voltage = 1.2 V, Rank and Configuration = 2R x 8
Description
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.
Brand: Crucial
Computer Memory Size: 64 GB
RAM Memory Technology: SO-DIMM
Memory Speed: 2666 MHz
Compatible Devices: Desktop
RAM Memory Technology: SO-DIMM
Memory Speed: 2666 MHz
Compatible Devices: Desktop
Additional Features: DDR4, Non-ECC
Voltage: 1.2 Volts
Column Address Strobe Latency: CL19
Form Factor: SO-DIMM
Data Transfer Rate: 12 Gigabits Per Second
Number of Pins: 260
RAM Size: 64 GB
Brand: Crucial
Model Name: Crucial DDR4 2666 MT/s SODIMMS
UPC: 649528903402
Manufacturer: Crucial
Item Weight: 8 Grams
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Jul 13
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
I purchased memory from OWC for my 2020 iMac 27" twice, and each time the memory did not work. One set wouldn't allow my computer to turn on at all, and the next set caused my computer to reboot about 5 mins over and over. I was very frustrated, and decided to give the Crucial memory before giving up on upgrading. It installed in ~3 mins and has worked flawlessly with no reboots, no crashes, no issues at all. The iMac has never run better, and I'm relieved to have found a solid solution for a good price.
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Reviewed in the United States on June 29, 2024 by MTSN
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
I’ve been using Crucial RAM forever and needed to upgrade my family computer. This RAM has greatly improved performance and enabled an upgrade to MacOS 15 Sequoia. The annoying Apple pop up spamming me that my Mini’s memory was low is gone. Big applications can run no problem with large .PDFs open contemporaneously. Dads, strap on the Etonic comfort sandals with socks following this project; and assume your hardest Cptn. Morgan pose when filling in the other neighborhood dads whom you tolerate in your territory regarding the unfathomable accomplishment you've wrought forth with your dad mitts. For not only did you perform cyber surgery on this Macintosh mare's innards, but the six year old girl lived to tell the tale and NOW. SHE. RIPS. Now, to throw more dirt on Apple: physically installing these So-Dimm sticks in the Mac Mini was like a powerful rash on the nether regions. The required tools which you DO NOT currently possess and are, indeed, 100% required for wiring work (particular on the power plug and the wifi antenna YOU CANNOT BE DELICATE ENOUGH) are also found on budget here on amazon with the JOREST 38Pcs Small Precision Screwdriver Set. If you think differently then I guess you're a Jabroni who needs to do a better job staying on top of the pressure washing on his home's siding in the back, PHIL! Be sure that you spend enough time on YouTube before you undertake this one: Apple intentionally engineered the box to be lay-person resistant. But with time, attention and care you can avoid a big cost associated with having a professional or the OEM themselves upgrade the RAM.
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Reviewed in the United States on October 30, 2024 by SRH Family
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
I do a lot of photo editing and working with large files can get cumbersome. I was running with a total of 64GB of ram (4x16GB) from another company but every once in a while my photo program would lock and I’d have to do a force quit. I ordered 128GB of Crucial ram (2 sets - 4x32GB chips). Installation was super easy, iMac was slightly slow on initial boot, but it’s started quickly every time since. No problems so far, large photo files have not been an issue. Very happy with Crucial!
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Reviewed in the United States on July 30, 2023 by D. Andrews
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
This was the last time I had a ram for Mac. It's still works like a horse. good times.
Reviewed in the United States on March 29, 2026 by Clark Kent
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
I had already installed two 32Gb memory chips after buying my computer in addition to the two original 4Gb chips that came with the 2020 iMac I have had for a year. Decided to go ahead and install the Crucial RAM 64Gb Kit to give me a full 128Gb of RAM. It was a good buy for the price and with all the software I run concurrently for my photography I think my machine will run smoothly! The installation is very easy...just followed the video available on the product page.
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Reviewed in the United States on June 29, 2023 by Kent Vaughn
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
The Crucial 64GB DDR4 RAM kit is a standout. It delivers exactly what it promises: flawless performance. Shipping was impressively fast, arriving in a neat little yellow padded envelope. Price-wise, it's on par with retail yet more affordable than other top brands. A solid choice for reliable RAM.
Reviewed in the United States on November 25, 2023 by Highway
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
This RAM gave a new purpose to my Asus GL702VSK. 64GB with 2667MHz exactly as described.
Reviewed in the United States on October 5, 2022 by Nadeem Shahbaz
Size: 64GB Kit (2x32GB)
Style: 2666 MHz
Mac mini late 2018 is a nightmare to work on but that's not Crucial's fault. The iFixit instructions are pretty good, so I was able to complete the install and get everything back together, but damn Apple could you have left a little more slack in the Wifi cable because getting that MHF4 or U.FL connector seated is inhumanly difficult. The memory works perfectly and upgrading from 16G to 64G made my almost 5 year old mini like a puppy again.
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Reviewed in the United States on May 5, 2023 by Resuna