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This item is eligible for return within 30 days of receipt
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:
19 left in stock
Arrives
Tuesday, Mar 10
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: 64 GB SO-DIMM
Memory Speed: 2666 MHz
Brand: Crucial
Series: Crucial DDR4 2666 MT/s SODIMMS
Item model number: CT2K32G4S266M
Item Weight: 0.282 ounces
Product Dimensions: 2.7 x 0.43 x 1.1 inches
Item Dimensions LxWxH: 2.7 x 0.43 x 1.1 inches
Color: Green
Number of Processors: 1
Computer Memory Type: SODIMM
Voltage: 1.2 Volts
Manufacturer: Crucial
Language: English
Date First Available: August 11, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Mar 10
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: 32GB Kit (2x16GB)
Style: 2400MHz
As always, Crucial is the best all around brand for Apple's (upgradable) computers. Crucial is owned by Micron, a company that Apple themselves uses as an OEM supplier. If you've ever pulled RAM out of a Mac before, you might have seen "Micron" on the labels. Crucial supplies their own branded components that you'd never see inside as OEM on a Mac, but the RAM itself is Micron underneath the Crucial label. It's the brand I always trust most with RAM upgrades on a Mac. It's not the cheapest, and is far from the most expensive. But it is the most dependable. And trust me, you want dependability if you're going to go through the hassle of upgrading the memory on a 2019 iMac. That said, installing RAM on a 2019 21.5" iMac is no easy task, at least not for the faint of heart. You'll also need to order yourself new display adhesive as you cannot reuse what was on the machine. I'd also advise that if you're going to go in, to also upgrade anything else that needs upgrading (SSD, adding a second drive, CPU, etc). Because it's not easy or fun in there, it's just nice to knock it all out of the park if you can. Also make sure you have your Torx screwdrivers ready as you'll need T5, T6, T8, T9 and T10 sizes, in addition to a P00/P000 screwdriver. Make sure the screwdrivers come magnetized, and if not get yourself a driver magnetizer/demagnetizer. It's quite the journey in there, which you should look into over at ifixit.com before you order a single thing.
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Reviewed in the United States on March 13, 2023 by Kris S.
Size: 64GB Kit (2x32GB)
Style: 2666MHz
I was a little scared about upgrading the ram on my iMac, but it worked just as they said. No problems and my computer is so much faster.
Reviewed in the United States on March 15, 2023 by Jill
Size: 64GB Kit (2x32GB)
Style: 2666MHz
The RAM increased performance greatly
Reviewed in the United States on January 29, 2023 by Bishara Atallah
Size: 64GB Kit (2x32GB)
Style: 2666MHz
It works well with my 2020 Imac 27". I tried another brand that didn't. The machine would not boot up. Recommended.
Reviewed in the United States on March 6, 2023 by Seamanpr
Size: 64GB Kit (2x32GB)
Style: 2666MHz
If you're wondering, yes, these can be added to the factory sticks that your machine came with - in my case adding these 32x2 gave me a total of 80GB and made a real difference. I organize my day-to-day by having a desktop open for each separate project - with each desktop having organized browser windows/tabs, Finder folders, etc. I was getting by with the factory stock 16gb, but upping the total RAM to 80gb is impressive. I unplugged the computer, rested it gently (padded) on the monitor, and pressed harder/further than anticipated on the button revealed under the power cord to pop open the memory cover. Note: set this cover aside in the same orientation to make reassembly easier with the flush fit. I pulled one factory 8gb stick and replaced it with the new 32gb stick, and repeated for the second replacement. I then put the original 8gb memory back in the two remaining slots. Your Mac wants the memory spread evenly across the channels - that is why there was originally a gap between them. So stick to that placement/spacing. In my case, my memory goes 32gb, 8gb, 32gb, 8gb. Make sure they are firmly and fully seated and close the tab back over and reassemble. Can be done in 5 minutes and you'll be very happy! Boot the system up and everything will initialize and you'll be good to go - if not, it is almost certainly because you don't have the memory sticks fully seated.
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Reviewed in the United States on April 9, 2022 by J. Thompson
Size: 32GB Kit (2x16GB)
Style: 2666MHz
I have an iMac Pro (2017, retina, 27", base memory 8GB) that I like except for the memory - it's too slow, and gets jammed up if I've opened too many programs. With great trepidation, I read the Apple specs to see what memory I should get to upgrade, found that the local shops didn't have much on hand, and decided to do it myself. The directions seemed straightforward, but this isn't my strong suit, and my hands aren't particularly strong, so I didn't know if I could remove the original memory or seat the new memory. I ordered a set of two 16GB memory chips for this model, and waited until someone was around in case something went awry who might be able to assist. Apple's explanation was very clear about how to add memory. I also read reviewer comments to see what problems others had encountered. The only hitch was in pushing the button to open the memory compartment - that needed more pressure from an implement other than my finger (e.g., a small screwdriver). I decided to try using the two empty slots, leaving the old 4GB chips in place, since it would still be balanced, and put the chips in (easily), closed up, put the cables back and the machine upright, and voila! It worked! my iMac is much quicker, and so far it hasn't frozen or "jammed up", so I'm very pleased with these chips. They have made a noticeable, welcome change, and I'm not feeling like such a klutz!
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Reviewed in the United States on February 22, 2021 by Chloe
Size: 64GB Kit (2x32GB)
Style: 2666MHz
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