A-Tech
A-Tech 4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-ECC Desktop RAM Memory Module
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
SpecPicks Verdict
SpecPicks classifies A-Tech 4GB DDR4 2666 MHz UDIMM PC4-21300 (PC4-2666V) CL19 DIMM Non-EC… as a category leader on buyer feedback in the memory & ram category, based on 989 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. A-Tech's positioning sits comfortably above the category median. 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
- ✓ Highly rated — 4.7★ average across customer reviews
- ✓ 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
| Brand | A-Tech |
|---|---|
| Voltage | 1.2 Volts |
| RAM Size | 4 GB |
| Form Factor | DIMM |
| Memory Speed | 2666 MHz |
| Model Number | AT4G1D4D2666NN12V |
| Number of Pins | 288 |
| Mfr Part Number | AT4G1D4D2666NN12V |
| Memory Generation | DDR4 |
| Compatible Devices | Desktop, Workstation |
| Data Transfer Rate | 21300 Megabytes Per Second |
| Memory Form Factor | UDIMM |
| Additional Features | Lightweight |
| Computer Memory Size | 4 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.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
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