Best Owc Ddr4 2666mhz Ecc Deals of Nov 2026

Updated November 10, 2026Our site contains affiliate links for which we may be compensated.

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OWC

OWC 16GB DDR4 2666MHz ECC UDIMM 288-pin Memory RAM | PC4-21300, ECC Unbuffered, 2Rx8, 1.2V, CL19, Compatible with Select Workstations, Servers, and NAS Systems

OWC 16GB UPGRADE: Consists of a single 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered DIMM 1.2V 288-pin Memory Module

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

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OWC

$21 Savings

OWC 32GB DDR4 2666MHz ECC SODIMM 260-pin Memory RAM | PC4-21300, ECC Unbuffered, 2Rx8, 1.2V, CL19, Compatible with Select Laptops, All-in-One Systems, and NAS Systems

OWC 32GB UPGRADE: Consists of a single 32GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC SO-DIMM 1.2V 260-pin Memory Module

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 the Performance of Your Server, Micro Server or NAS System

INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing

EASY INSTALLATION: In Most Cases Installing Memory is an Easy DIY project. Watch our OWC Basic Installation Video for help.

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OWC

OWC 64GB (4x16GB) DDR4 2666MHz ECC UDIMM 288-pin Memory RAM | PC4-21300, ECC Unbuffered, 2Rx8, 1.2V, CL19, Compatible with Select Workstations, Servers, and NAS Systems

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

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OWC

OWC 16GB Memory RAM Kit Compatible with Synology DiskStation DS723+ DS923+ | 16GB (2x8GB) PC4-21300 DDR4 2666MHz ECC Unbuff 1Rx8 CL19 260-pin SODIMM

OWC 16GB UPGRADE: Consists of 2pcs of 8GB DDR4 2666MHz PC4-21300 CL19 1RX8 ECC SO-DIMM 1.2V 260-pin Memory Modules Compatible with Synology part numbers D4ES01-8G

Compatible with Synology NAS DiskStation, RackStation, FlashStation, & NVR DVA Servers models: DS1522+, DS1618+, DS1621+, DS1621xs+, DS1819+, DS1821+, DS2419+, DS2419+II, DS2422+, DS3018xs, DS3617xs, DS3617xsII, DS3622xs+, DVA3219, DVA3221, FS1018, RS1221+, RS1221RP+, RS822+, RS822RP+

INCREASED PERFORMANCE: Memory Upgrades are the Most Effective and Easy Way to Boost the Performance of Your Server, Micro Server or NAS System

INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing

EASY INSTALLATION: In Most Cases Installing Memory is an Easy DIY project. Watch our OWC Basic Installation Video for help.

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OWC

OWC 32GB (2x16GB) DDR4 2666MHz ECC UDIMM 288-pin Memory RAM | PC4-21300, ECC Unbuffered, 2Rx8, 1.2V, CL19, Compatible with Select Workstations, Servers, and NAS Systems

OWC 32GB UPGRADE: Consists of 2pcs 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

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OWC

OWC 8GB Memory RAM Replacement for Synology D4ES03-8G | 8GB PC4-21300 DDR4 2666MHz ECC Unbuff 1Rx8 CL19 260-pin SODIMM

OWC 8GB DDR4 2666 PC4-21300 CL19 1Rx8 260-pin 1.2V ECC Unbuffered SODIMM Memory RAM Module Upgrade compatible with Synology D4ES03-8G

100% COMPLIANT: JEDEC-Standard and 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.

EASY INSTALLATION: In Most Cases, Installing Memory is an Easy DIY project. Watch our OWC Basic Installation Video for Help.

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OWC

$21 Savings

OWC 16GB DDR4 2666MHz ECC RDIMM 2Rx4 288-pin Memory RAM

ECC REGISTERED UPGRADE: This type of memory is used in Workstations and Servers. It will NOT be compatible with standard desktop computers. Also, it cannot be mixed with UNBUFFERED memory.

OWC 16GB UPGRADE: Consists of a single 16GB DDR4 2666MHz PC4-21300 CL19 2RX4 ECC Registered RDIMM 1.2V 288-pin Memory Module

100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed all Manufacturer OEM Specs

MAXIMIZE YOUR SERVER: With OWC's ECC Registered Server Memory, Our RAM upgrades will extend the life of your old infrastructure or save money when building a new one

INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing

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OWC

$18 Savings

OWC 16GB (2x8GB) DDR4 2666MHz ECC UDIMM 288-pin Memory RAM

OWC 16GB UPGRADE: Consists of 2pcs of 8GB DDR4 2666MHz PC4-21300 CL19 1RX8 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

Details & specs

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Our #1 Pick Today

OWC

OWC 16GB DDR4 2666MHz ECC UDIMM 288-pin Memory RAM | PC4-21300, ECC Unbuffered, 2Rx8, 1.2V, CL19, Compatible with Select Workstations, Servers, and NAS Systems

OWC 16GB UPGRADE: Consists of a single 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC Unbuffered DIMM 1.2V 288-pin Memory Module

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

Details & specs

Check Price

on Amazon.com

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Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

8 Owc Ddr4 2666mhz Ecc deals are available from: Amazon, starting from $74.99.

The biggest discount we found is 5% on OWC 16GB DDR4 2666MHz ECC UDIMM 288-pin Memory RAM | PC4-21300, ECC Unbuffered, 2Rx8, 1.2V, CL19, Compatible with Select Workstations, Servers, and NAS Systems (OWC2E6D42R816GB) at Amazon.

The lowest price we found is $74.99 while the highest is $596.36. Prices for the best Owc Ddr4 2666mhz Ecc deals average at $229.42.