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32GB 2X16GB DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM KIT NEMIX RAM Compatible with Synology D4ES03-16G NAS 25 Series: DS1825+ DS1525+ DS925+ DS725+
NEMIX RAM

32GB 2X16GB DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM KIT NEMIX RAM Compatible with Synology D4ES03-16G NAS 25 Series: DS1825+ DS1525+ DS925+ DS725+

Bottom line: The 32GB 2X16GB DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC is a specs-and-price decision rather than a crowd-consensus one in the memory (ram) category, priced around $313.89 on Amazon as of 2026-10-06. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

$313.89

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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.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Backed by NEMIX RAM'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

SpecPicks Verdict

SpecPicks scored 32GB 2X16GB DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC… using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. NEMIX RAM'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

  • EXACT-MATCH UPGRADE — 32GB (2X16GB) kit DDR4-2666 (PC4-21300), 2Rx8 ECC, 1.2V, CL19, 260-pin SODIMM. The precise rank, voltage, and speed your system's memory controller expects, so it's recognized at full capacity and posts correctly.
  • VERIFIED FITMENT — Direct replacement for D4ES03-16-25SER-V26. The 260-pin ECC SODIMM form factor required by ECC-capable NAS Devices and compact servers — not a desktop UDIMM. Spec-matched to your unit's memory-population rules.
  • DATA INTEGRITY — On-module ECC catches and corrects single-bit errors on the fly — protecting against silent data corruption and unexpected reboots in the 24/7 RAID and storage workloads ECC NAS and compact-server systems run.
  • CHECK YOUR CONFIG — NAS and system memory support varies by model. Check your unit's compatibility list and manual for supported capacities and approved DIMM population before purchase.
  • LIFETIME SUPPORT — Backed by a lifetime replacement warranty and free US-based technical support.

Full Specifications

BrandNEMIX RAM
Weight16g
Voltage1.2 Volts
RAM Size32 GB
Form FactorECC SODIMM
Memory Speed2666 MHz
Compatible Devices25 Series: DS1825+ DS1525+ DS925+ DS725+, DiskStation NAS Devices, Synology OEM Factory Direct Pre-Installed Memory D4ES03-16G
Additional FeaturesCompatible with Synology NAS Storage Devices
Computer Memory Size32 GB
Warranty DescriptionLifetime Replacement Warranty
RAM Memory TechnologyDDR4 ECC SODIMM
Column Address Strobe Latency19 Nanowatts

Ready to buy?

32GB 2X16GB DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM KIT NEMIX RAM Compatible with Synology D4ES03-16G NAS 25 Series: DS1825+ DS1525+ DS925+ DS725+ 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 — $313.89

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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