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A-Tech 4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Module
A-Tech

4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Module

By SpecPicks Editorial · Verified 2026-07-22

$41.26
Buy on Amazon — $41.26 Compare to similar memory (ram)

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.

Bottom line: The 4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Module is a niche pick — read recent reviews before buying in the memory (ram) category, priced around $41.26. Read recent reviews carefully before committing.

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SpecPicks Verdict

SpecPicks classifies A-Tech 4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM… as a niche pick — read recent reviews before buying in the memory (ram) category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. A-Tech's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

  • ✓ Maximize your system's performance, boost loading speeds and multitask with ease
  • ✓ Backed by A-Tech's warranty and support channels
  • ✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key 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
  • Single 4GB RAM Module | DDR4 DIMM 288-Pin | Speeds up to 2666MHz (2667MHz), PC4-21300 / PC4-2666V
  • NON-ECC Unbuffered | 1Rx8 or 1Rx16 - Single Rank | JEDEC DDR4 standard 1.2V

Full Specifications

BrandA-Tech
Voltage1.2 Volts
RAM Size4 GB
Form FactorDIMM
Memory Speed2666 MHz
Model NumberAT4G1D4D2666NN12V
Number of Pins288
Mfr Part NumberAT4G1D4D2666NN12V
Memory GenerationDDR4
Compatible DevicesDesktop, Workstation
Data Transfer Rate21300 Megabytes Per Second
Memory Form FactorUDIMM
Additional FeaturesLightweight
Computer Memory Size4 GB

Ready to buy?

A-Tech 4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Module is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Check price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.

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A-Tech 4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Module
$41.26
View on Amazon →