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OWC 64GB (4x16GB) DDR4 2666MHz ECC UDIMM 288-pin Memory RAM
OWC

OWC 64GB (4x16GB) DDR4 2666MHz ECC UDIMM 288-pin Memory RAM

Bottom line: The OWC 64GB DDR4 2666MHz ECC UDIMM 288-pin Memory RAM 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 desktop and laptop memory upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Backed by OWC'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

Manufacturer description

OWC 64GB UPGRADE: Consists of 4pcs of 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered DIMM 1.2V 288-pin Memory Modules 100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs INCREASED PERFORMANCE: Memory Upgrades are the Most Effective and Easy Way to Boost your PC's Performance

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SpecPicks Verdict

SpecPicks scored OWC 64GB DDR4 2666MHz ECC UDIMM 288-pin Memory RAM using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. OWC'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

  • OWC 64GB UPGRADE: Consists of 4pcs of 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered DIMM 1.2V 288-pin Memory Modules
  • 100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs
  • INCREASED PERFORMANCE: Memory Upgrades are the Most Effective and Easy Way to Boost your PC's Performance
  • INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing
  • Works with Desktop, Workstation and Servers like: PowerEdge, Precision, StoreEasy, ProLiant, Apollo, ThinkServer, ThinkStation, ThinkSystem, System X and more

Full Specifications

Size64GB kit (4 x 16GB)
BrandOWC
ModelOWC2E6D42R8064S
WarrantyOWC Memory Lifetime Limited Warranty including Advanced Replacement Program
UnitCount4
ManufacturerOther World Computing
ItemPartNumberOWC2E6D42R8064S

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OWC 64GB (4x16GB) DDR4 2666MHz ECC UDIMM 288-pin Memory RAM 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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OWC 64GB (4x16GB) DDR4 2666MHz ECC UDIMM 288-pin Memory RAM
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