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OWC 16GB Memory RAM Replacement for Synology D4ECSO-2666-16G D4ES01-16G
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OWC 16GB Memory RAM Replacement for Synology D4ECSO-2666-16G D4ES01-16G

Bottom line: The OWC 16GB Memory RAM Replacement for Synology 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

  • ✓ 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

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SpecPicks Verdict

SpecPicks scored OWC 16GB Memory RAM Replacement for Synology 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 16GB UPGRADE: Consists of a single 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC SO-DIMM 1.2V 260-pin Memory Module
  • Compatible with Synology Part D4ECSO-2666-16G, Compatible with the following Synology machines: DS3617xsII; DS1621+; DS1821+; DS2419+II
  • 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.

Full Specifications

BrandOWC
Weight16g
Memory Speed2666 MHz
INDUSTRY LEADINGConsumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing
OWC 16GB UPGRADEConsists of a single 16GB DDR4 2666MHz PC4-21300 CL19 2RX8 ECC SO-DIMM 1.2V 260-pin Memory Module
EASY INSTALLATIONIn Most Cases Installing Memory is an Easy DIY project. Watch our OWC Basic Installation Video for help.
Compatible DevicesMicro Servers, Network Attached Storage (NAS), Network Switched, Server, Synology
Computer Memory Size16 GB
INCREASED PERFORMANCEMemory Upgrades are the Most Effective and Easy Way to Boost the Performance of Your Server, Micro Server or NAS System
RAM Memory TechnologyDDR4

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OWC 16GB Memory RAM Replacement for Synology D4ECSO-2666-16G D4ES01-16G 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 16GB Memory RAM Replacement for Synology D4ECSO-2666-16G D4ES01-16G
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