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A-Tech 64GB DDR4 2666MHz PC4-21300 ECC LRDIMM 4Rx4 (4DRx4) Quad Rank 1.2V Load Reduced DIMM 288-Pin Server RAM Memory Upgrade Module (A-Tech Enterprise Series)
A-Tech

A-Tech 64GB DDR4 2666MHz PC4-21300 ECC LRDIMM 4Rx4 (4DRx4) Quad Rank 1.2V Load Reduced DIMM 288-Pin Server RAM Memory Upgrade Module (A-Tech Enterprise Series)

Bottom line: The A-Tech 64GB DDR4 2666MHz PC4-21300 ECC LRDIMM 4Rx4 is a specs-and-price decision rather than a crowd-consensus one in the memory & ram category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ ECC Load Reduced LRDIMM; 4Rx4 (4DRx4) - Quad Rank x4; JEDEC DDR4 standard 1.2V
  • ✓ Backed by A-Tech's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored A-Tech 64GB DDR4 2666MHz PC4-21300 ECC LRDIMM 4Rx4 (4DRx4) Quad Rank… using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. A-Tech's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • A-Tech RAM Memory compatible for select DDR4 Servers only; (*WILL NOT WORK with Desktop Computers, Laptop Computers, or PCs of any kind*)
  • Single 64GB RAM Module; DDR4 DIMM 288 Pin; Speeds up to 2666MHz/2667MHz PC4-21300 (PC4-2666V)
  • ECC Load Reduced LRDIMM; 4Rx4 (4DRx4) - Quad Rank x4; JEDEC DDR4 standard 1.2V
  • Improves system performance, workload capacity, and reduces bottlenecks by increasing memory (RAM) resources
  • Note: This memory is ECC Load Reduced and cannot be mixed with different ECC types such as ECC Registered, ECC Unbuffered, or Non-ECC Unbuffered; (Memory compatibility can vary among different system models and their installed components; please verify compatibility and follow memory channel guidelines to ensure maximum performance)
  • Each A-Tech memory module is built and tested for superior performance and trusted reliability

Full Specifications

BrandA-Tech
Voltage1.2 Volts
RAM Size64 GB
Model NameEnterprise Series
Form FactorDIMM
Memory Speed2666 MHz
Model NumberAT64G1D4D2666LQ4N12V
Item Type Namecomputer-internal-memory
Number of Pins288
Mfr Part NumberAT64G1D4D2666LQ4N12V
Memory GenerationDDR4
Compatible DevicesServer
Data Transfer Rate21300 Megabytes Per Second
Memory Form FactorLRDIMM
Additional FeaturesECC Load Reduced, Ecc
Computer Memory Size64 GB
Warranty DescriptionLimited Lifetime Warranty covering defects in materials and workmanship
RAM Memory TechnologyDDR4
Column Address Strobe LatencyCL19

Ready to buy?

A-Tech 64GB DDR4 2666MHz PC4-21300 ECC LRDIMM 4Rx4 (4DRx4) Quad Rank 1.2V Load Reduced DIMM 288-Pin Server RAM Memory Upgrade Module (A-Tech Enterprise Series) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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A-Tech 64GB DDR4 2666MHz PC4-21300 ECC LRDIMM 4Rx4 (4DRx4) Quad Rank 1.2V Load Reduced DIMM 288-Pin Server RAM Memory Upgrade Module (A-Tech Enterprise Series)
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