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A-Tech 64GB DDR5 6400MHz PC5-51200 ECC RDIMM 2Rx4 (EC8 10x4) Dual Rank 1.1V ECC Registered DIMM 288-Pin Server RAM Memory Upgrade Module (A-Tech Enterprise Series)
A-Tech

A-Tech 64GB DDR5 6400MHz PC5-51200 ECC RDIMM 2Rx4 (EC8 10x4) Dual Rank 1.1V ECC Registered DIMM 288-Pin Server RAM Memory Upgrade Module (A-Tech Enterprise Series)

Bottom line: The A-Tech 64GB DDR5 6400MHz PC5-51200 ECC RDIMM 2Rx4 is a specs-and-price decision rather than a crowd-consensus one in the memory & ram category, priced around $3,109.55 on Amazon as of 2026-10-20 22:20 UTC. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

$3109.55

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Buy on Amazon — $3,109.55 Compare to similar memory & ram

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.

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Single 64GB RAM Module; DDR5 DIMM 288 Pin; Speeds up to 6400MHz PC5-51200 (PC5-6400B)
  • ✓ 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 DDR5 6400MHz PC5-51200 ECC RDIMM 2Rx4 (EC8 10x4) Dual… 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 DDR5 Server systems; (WILL NOT WORK with Desktop Computers/PCs or Laptop Computers)
  • Single 64GB RAM Module; DDR5 DIMM 288 Pin; Speeds up to 6400MHz PC5-51200 (PC5-6400B)
  • ECC Registered RDIMM; 2Rx4 (EC8, 10x4) - Dual Rank x4; JEDEC DDR5 standard 1.1V
  • Improves system performance, workload capacity, and reduces bottlenecks by increasing memory (RAM) resources
  • Note: EC8 (10x4) ECC Registered modules cannot be mixed with EC4 (9x4) ECC Registered modules or with different ECC types such as ECC Unbuffered, ECC Load Reduced 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
Voltage1.1 volts
RAM Size64 GB
Form FactorRDIMM
Memory Speed6400 MHz
Model NumberAT64G1D5D6400RD4EC8N11V
Number of Pins288
Mfr Part NumberAT64G1D5D6400RD4EC8N11V
Number of Items1
Compatible DevicesServer
Data Transfer Rate51200 megabytes_per_second
Additional FeaturesEcc, Registered Memory
Computer Memory Size64 GB
Warranty DescriptionLimited Lifetime Warranty covering defects in materials and workmanship
RAM Memory TechnologyDDR5
Column Address Strobe LatencyCL52

Ready to buy?

A-Tech 64GB DDR5 6400MHz PC5-51200 ECC RDIMM 2Rx4 (EC8 10x4) Dual Rank 1.1V ECC Registered 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.

Buy on Amazon — $3,109.55

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

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A-Tech 64GB DDR5 6400MHz PC5-51200 ECC RDIMM 2Rx4 (EC8 10x4) Dual Rank 1.1V ECC Registered DIMM 288-Pin Server RAM Memory Upgrade Module (A-Tech Enterprise Series)
$3,109.55
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