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A-Tech

A-Tech 16GB (2x8GB) DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Modules

  • Based on 998 reviews
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Availability: 15 left in stock
Fulfilled by Amazon
Arrives Friday, Aug 28
Order within 21 hours and 5 minutes
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Size: 16GB Kit (2 x 8GB)


Features

  • Compatible with select DDR4 Desktop computers + Easy to install at home, no expertise required
  • Maximize your system's performance, boost loading speeds and multitask with ease
  • Backed by A-Tech's Lifetime Warranty + Friendly tech support team available to help before and after your purchase
  • 16GB RAM Kit ( 2 x 8GB Modules ) | DDR4 DIMM 288-Pin | Speeds up to 2666MHz (2667MHz), PC4-21300 / PC4-2666V
  • NON-ECC Unbuffered | 1Rx8 or 2Rx8 - Single or Dual Rank | JEDEC DDR4 standard 1.2V

Features

  • Compatible with select DDR4 Desktop computers + Easy to install at home, no expertise required
  • Maximize your system's performance, boost loading speeds and multitask with ease
  • Backed by A-Tech's Lifetime Warranty + Friendly tech support team available to help before and after your purchase
  • 16GB RAM Kit ( 2 x 8GB Modules ) | DDR4 DIMM 288-Pin | Speeds up to 2666MHz (2667MHz), PC4-21300 / PC4-2666V
  • NON-ECC Unbuffered | 1Rx8 or 2Rx8 - Single or Dual Rank | JEDEC DDR4 standard 1.2V

RAM: ‎16 GB DDR4 SDRAM


Memory Speed: ‎2666 MHz


Brand: ‎A-Tech Components


Item model number: ‎AT8G2D4D2666NA0N12V


Item Weight: ‎1.72 ounces


Product Dimensions: ‎5.25 x 1.23 x 0.15 inches


Item Dimensions LxWxH: ‎5.25 x 1.23 x 0.15 inches


Color: ‎Multicolor


Computer Memory Type: ‎DDR4 SDRAM


Voltage: ‎1.2 Volts


Manufacturer: ‎A-Tech Components


Country of Origin: ‎USA


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎November 13, 2018


Brand: A-Tech


Computer Memory Size: 16 GB


RAM Memory Technology: DDR4


Memory Speed: 2666 MHz


Compatible Devices: Desktop, Workstation


RAM Memory Technology: DDR4


Memory Speed: 2666 MHz


Compatible Devices: Desktop, Workstation


Additional Features: Lightweight


Voltage: 1.2 Volts


Column Address Strobe Latency: 19


Form Factor: DIMM


Data Transfer Rate: 21300 Megabytes Per Second


Number of Pins: 288


Memory Form Factor: UDIMM


Memory Generation: DDR4


RAM Size: 16 GB


Brand: A-Tech


Model Name: A-Tech


Manufacturer: A-Tech Components


Model Number: AT8G2D4D2666NA0N12V


Mfr Part Number: AT8G2D4D2666NA0N12V


Warranty Description: Limited Lifetime Warranty Covering Defects In Materials And Workmanship


Unit Count: 2.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 28

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.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great product for the $
Size: 16GB Kit (2 x 8GB)
Excellent product. I could not use my desktop computer due to a RAM problem. Purchased this, installed it and my computer works fine.
Reviewed in the United States on March 21, 2026 by Linda C.
    • A-Tech 16GB (2x8GB) Saved My Thrashing Computer
Size: 16GB Kit (2 x 8GB)
The new memory works great! Copilot told me that going from 12 GB of memory to 16 GB would improve the speed by 20% to 40%. It wasn't wrong. It's at least 40% better than it was. I am much happier with my setup now, and I saved about $100, because I didn’t purchase 32GB. I told Copilot how I use my computer, and it suggested that spending twice the amount of money to get 32 GB would be overkill. My computer started thrashing, when I upgraded to Windows 11, which uses and idles around 7 GB of RAM, where as Windows 10 uses around only 3 or 4 GB. Upgrading to Windows 11 caused the system to thrash, create a bottleneck, because of Windows 11’s need for more RAM. My computer was using 8 GB in dual-channel mode and 4 GB in single, because I had only 12GB. Now, I have 16 GB in full dual-channel mode, and it's much faster even though there is only 4 GB more RAM. So, if your computer was doing great for your purposes, with only 12 GB of RAM, before you upgraded to Windows 11, you might be satisfied with 16GB. I have a Dell Inspiron 3880, and this RAM works great with it! Just check your RAM specs with your computer manufacturer. It works with other computers, too. I have a tremor in my wrist, and I managed to install the memory anyway. I should also mention that I typically keep two or three browsers open, using around 45 tabs; LibreOffice with a single word document; also Windows Media Player, Copilot; and Thunderbird Mail and that's about it. I don’t use my computer for gaming. Task Manager says that I am consuming on average between 75% to 90% of my RAM regularly, but it is fine at that load. Running in dual-channel mode is the difference. So, you might not need a new computer yet, if you just upgraded to Windows 11 and noticed that your computer slowed down a lot. To run in dual channel mode you need two memory modules with the same specs. ... show more
Reviewed in the United States on February 20, 2026 by Glenn A Lavoie
    • A great budget ram
Size: 8GB
Its a fair speed, and can easily be upgraded to something better later on if needed. Easy to install and doesn't get that hot. Good Price for 8gb!
Reviewed in the United States on April 11, 2026 by Ashton
    • The BESTEST RAM!!!
Size: 4GB
I purchased this July 31, 2023. For some reason, Amazon still wants a review. So, this RAM worked PERFECTLY in my system. I couldn't be happier. Nothing makes a person's day than additional RAM. So glorious to have my PC perform so quickly and smoothly. I still have that system, but it couldn't handle the current version of Windows so I bought a new system. But I keep the old system just because of its RAM and so happy the RAM made me. ... show more
Reviewed in the United States on February 10, 2026 by Jim in Cincy
    • great product
Size: 8GB
Made my computer, run like new
Reviewed in the United States on April 9, 2026 by Joe Luchansky
    • Improved computer performance
Size: 8GB
Installation was easy and I doubled my computer memory. The computer came back on line with no issues and improved the performance dramatically. The only issue was the price but that isn't an Amazon issue, prices are up everywhere. Very pleased
Reviewed in the United States on March 19, 2026 by Paul Scifres
    • The important thing to know is that if you have two ram slots you should use two RAM sticks
Size: 16GB
This company never disappoints. Every time I buy a stick of ram from this company it works perfectly. I popped it in my computer and 5 minutes later Windows is running and it's running better because now I have a dual channel ram instead of single I highly recommend this
Reviewed in the United States on March 19, 2026 by Bobby Slade
    • Great Product!
Size: 32GB Kit (2 x 16GB)
I never leave feedback (and they request it almost immediately after you receive the product, so you really aren't able to assess the long-term performance), BUT, on this one so far, the results have been awesome! Received it quickly, installed it easily and my 6 year old PC runs BETTER than it did when new. Speed and Reliability are outstanding. Huge performance improvement over what I was dealing with. Again, I have to qualify it with "So Far", but I'm very happy as of now. ... show more
Reviewed in the United States on October 14, 2025 by Amazon Customer

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