Search  for anything...
Crucial

Crucial 16GB, 260-pin SODIMM, DDR4 PC4-21300,

  • Based on 4,755 reviews
Condition: New
Checking for the best price...
$100.00 Why this price?
Save $19.99 was $119.99

Buy Now, Pay Later

As low as $16.67 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

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.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by eStarDeals
Arrives Friday, Sep 4
Order within 14 hours and 30 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: 16GB Dual Rank


Style: 2666MHz


Pattern Name: Memory


Features

  • 260-pin SODIMM
  • DDR4-2666

Description

CT16G4SFD824A is a 16GB DDR4 Notebook module that operates at speeds up to 2400 MT/s and has a CL17 latency. It is an Buffered SODIMM. It conforms to the industry standard DDR4 SODIMM layout of 260 pins and is compatible with systems that take DDR4 2400MT/s SODIMM memory.

Brand: Crucial


Computer Memory Size: 16 GB


RAM Memory Technology: DRAM


Memory Speed: 2666 MHz


Compatible Devices: Laptop


RAM Memory Technology: DRAM


Memory Speed: 2666 MHz


Compatible Devices: Laptop


Additional Features: nv AMD Validation^AMD Ryzen | Company Program^Crucial | Component Configuration^x8 based | Configuration^2048Meg x 64 | DDR Timings^CL=19 | DIMM Type^Unbuffered | Density^16GB | Error Checking^NON-ECC | Megabytes^16384 | Memory Type^DDR4 PC4-21300 | Module Rank^Dual Ranked | Package^260-pin SODIMM | Platform Category^DDR4 | Speed^DDR4-2666 | Voltage^1.2V | VolumeDiscountBucket^LOW


Voltage: 1.2 volts


Column Address Strobe Latency: 17


Form Factor: SO-DIMM


Data Transfer Rate: 2666 megabits_per_second


Number of Pins: 260


Memory Form Factor: SODIMM


Memory Generation: DDR4


RAM Size: 16 GB


Brand: Crucial


Model Name: CT16G4SFD8266


UPC: 696551661687 649528780140


Manufacturer: Crucial Technology


Unit Count: 1 Count


Global Trade Identification Number: 40


Built-In Media: DDR4 Laptop DRAM


Item Weight: 9.07 g


Item Type Name: Crucial 16GB Single DDR4 2666 MT/s (PC4-21300) DR x8 SODIMM 260-Pin Memory - CT16G4SFD8266


Model Number: CT16G4SFD8266


Mfr Part Number: CT16G4SFD8266


Warranty Description: Limited lifetime warranty


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 4

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Working flawlessly
It took a little trick to crack open my laptop, but installing the Crucial 16GB, 260-pin SODIMM was super easy. After the installation, my laptop became much more powerful. Good quality and compatibility.
Reviewed in the United States on November 5, 2025 by Oleeo
    • Greatly improved performance of Motile M141 from Walmart
I bought a travel laptop (Motile M141 manufactured Sept 2019, purchased on sale December 2019 from Walmart) a great value but a little slow in processing speed with only 4 GB RAM. After researching and getting conflicting information as to whether this machine would accept only 8 GB RAM or would work with 16 GB RAM, I purchased the Crucial 16 GB. Plug and play, easy install with only 6 screws to remove on the Motile housing, checked the system information after turning on the machine and find that it is reading the 16 GB RAM and able to utilize 13.9 GB. Processing speed is excellent now. I am not a gamer and am not using this laptop for memory-intensive photo or video, so haven't got any feedback for you in that regard. I am using this laptop mainly for invoicing, email and documents. Not a techy person but OK with tools, the switch took only about 5 minutes start to finish and was not difficult to do myself. Highly recommend for this application. ... show more
Reviewed in the United States on June 10, 2020 by Mark
    • Works with Synology DS423+
Review Image by Amazon Customer
I bought this to improve upon the laughable 2gb of ram built into the synology DS423+ and it seems to be working great! I had to look at the instructions on how to insert it because I've never used a NAS or this type of ram stick but it was super easy once I looked it up. I can't speak to performance since I didn't use the NAS before installing this, but it shows up and hasn't had any issues in the month or so I've been using it. Would definitely recommend for the DS423+ for a fraction of the price of the Synology branded ram. ... show more
Reviewed in the United States on July 22, 2025 by Amazon Customer
    • Great company, great product, great results
Popped right in and worked exactly as needed and described. No laptop should ever be sold with 4GB of Ram - this made that laptop zip right along - Great product
Reviewed in the United States on July 28, 2025 by Annette and Paul Holahan
    • Does the job
Good price
Reviewed in the United States on July 15, 2026 by Boss
    • Matched perfectly with a 16GB Samsung 2666 DDR4 SODIMM in ASUS ROG GU501GM
I was nervous about mixing this with the 16GB Samsung DDR4 2666 SODIMM in my new ASUS ROG GU501GM. Back when I use to build computers, we had to buy matched memory modules to achieve Dual Channel operation. The original in my system was a Samsung with a speed of 2666Mhz, and a latency of 19. Everything looked like they should match, but I was still nervous about it. I have replaced the original .M2 128GB SATA drive with a Samsung 512GB NVME drive, and the Hybrid 1TB drive with a Samsung 1TB SSD. The computer incrementally increased performance, with each of the additions, but still wasn't where I thought it should be. Ordered this chip set, and with Prime, installed it two days after the order date. WOW!! Dual Channel!!! The first two additions to the ASUS were nice incremental changes, but the speed from 32GB Dual Channel is amazing, Everything is incredibly fast. I can't claim that this was THE fix, but with everything else, the only thing that appeared to me to be the bottleneck was the single channel RAM. That being said, the Crucial RAM was a perfect match for my Samsung 16GB RAM stick that was factory installed by ASUS. I am extremely happy with the results, and would recommend this RAM chip to anyone that wants to complete their system! ... show more
Reviewed in the United States on April 22, 2019 by Spider223
    • Product quality
I've upgraded my Lenovo Ideapad Core I3 laptop from 8GB to 16GB RAM upon the arrival of it on Sat. It works perfectly now. Used to be sooo slow. Many thanks! The only reason I rated it 4 rather than 5 was that a 8GB ram was mistakenly shipped, but the seller acted so quickly to send the correct. I know its a forgiven error that happens ... show more
Reviewed in the United States on February 2, 2026 by M. Jin
    • Works as expected with Synology NAS
Purchased for use in a Synology DS920+ per internet guides stating this particular sku was compatible. Installation was quick and easy and the NAS booted up with no problems and now shows 20GB system RAM.
Reviewed in the United States on February 6, 2025 by Andy

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...