Crucial 16GB Single DDR4 2666 MT/s (PC4-21300) CL19 DR x8 SODIMM 260-Pin for Mac - CT16G4S266M
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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:
20 left in stock
Arrives
Monday, Sep 22
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Size: 16GB
Style: 2666MHz
Features
- Increases Mac system performance
- Improve responsiveness, run apps faster, and multitask with ease
- Compatible with the latest Mac DDR4 systems and easy to install
- Compatible with (Retina 5K 2017 27" & Retina 5K 2019 27" iMac computers)
- Every single module extensively tested at the component and module level
Description
CT16G4S266M is a 16GB Dual Ranked DDR4 SODIMM module 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 2666MT/s SODIMM memory.
RAM: 16 GB DDR4 SDRAM
Memory Speed: 2666 MHz
Brand: Crucial
Item model number: CT16G4S266M
Item Weight: 0.32 ounces
Product Dimensions: 2.7 x 0.2 x 1.1 inches
Item Dimensions LxWxH: 2.7 x 0.2 x 1.1 inches
Processor Count: 1
Computer Memory Type: SODIMM
Voltage: 1.2 Volts
Manufacturer: Crucial
Date First Available: July 2, 2019
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Sep 22
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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- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
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
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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
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Style: 2666MHz
Easy upgrade with clear improvement in performance.
Reviewed in the United States 🇺🇸 on September 29, 2022 by HP
Size: 16GB Kit (2x8GB)
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Excellent quality and very easy to install.
Reviewed in the United States 🇺🇸 on September 15, 2022 by Richard Wayne Fry
Size: 32GB Kit (2x16GB)
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Straight forward easy upgrade that was worth the money .The benefits were immediate and noticeable in certain applications and faster all around . Highly recommend seller for fast shipping and item as described with no surprises . In summary a happy customer.
Reviewed in the United States 🇺🇸 on August 9, 2022 by Happy Nomad
Size: 64GB Kit (2x32GB)
Style: 2666MHz
Prices will drop but its great for now! Originally swapped out the 8gb from a Mac Mini 2018. Works flawless and without a hitch. Constantly at around 36+ gb of use so I know it will pay itself over. Had a decision to buy the mac studio 64gb vs this. Decided to wait for M2 or later since the studio is a bit overkill for my needs. So far even with this upgrade I have saved around $2000, so I can say its a win and it works without a hitch. Everything is super snappy even with an older Mac Mini so I am a happy customer. I can't believe I did not think of this earlier since I came from a macbook with memory pressure always so high and no ability to upgrade.
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Reviewed in the United States 🇺🇸 on April 3, 2022 by Mark
Size: 16GB Kit (2x8GB)
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I was a bit afraid to purchase software, but this product is great and works fantastic. Follow the Apple install procedure and you will not hav a problem.
Reviewed in the United States 🇺🇸 on August 6, 2022 by Lee
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