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NEMIX RAM 16GB (1X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM NAS Memory Compatible with Synology Diskstation and Rackstation NAS Device
NEMIX RAM

NEMIX RAM 16GB (1X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM NAS Memory Compatible with Synology Diskstation and Rackstation NAS Device

Bottom line: The NEMIX RAM 16GB: Exact D4ECSO-2666-16G replacement for Synology DiskStation and RackStation NAS units; main trade-off: DDR4-2666 only - no benefit on NAS units that support faster memory.

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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

  • ✓ Exact D4ECSO-2666-16G replacement for Synology DiskStation and RackStation NAS units
  • ✓ 260-pin SODIMM, 2Rx8, CL19 at 1.2V - matches Synology's stock ECC module spec
  • ✓ ECC unbuffered memory catches single-bit errors on always-on NAS workloads
  • ✓ Lifetime replacement warranty plus free US-based technical support

Cons

  • ✗ DDR4-2666 only - no benefit on NAS units that support faster memory
  • ✗ Single 16GB module, so dual-channel needs a second purchase
  • ✗ NEMIX RAM lacks the brand recognition of Crucial, Kingston, or Samsung
  • ✗ Synology limits supported capacity per model, so you must verify before ordering

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SpecPicks Verdict

SpecPicks scored NEMIX RAM 16GB (1X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19… 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 — 16GB (1X16GB) DDR4-2666 (PC4-21300), 2Rx8, 1.2V, CL19, 260-pin SODIMM. The memory your Synology or compatible NAS needs, matched to your unit so it's recognized in full and runs reliably.
  • VERIFIED FITMENT — Direct replacement for D4ECSO-2666-16G. The 260-pin SODIMM form factor for NAS units and compact systems that take laptop-style memory — not a desktop DIMM. Check your unit's supported memory and capacity before ordering.
  • REAL-WORLD SPEEDUP — More memory means smoother multitasking and more headroom for apps, containers, and concurrent connections — steadier performance when your NAS is under load.
  • CHECK YOUR CONFIG — NAS memory support varies by model. Check your unit's compatibility list and supported capacity in the manual or maker's spec page 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 Size16 GB
Unit Count1 Count
Form FactorSO-DIMM
Memory Speed2666 MHz
Number of Pins260
Number of Items1
Number of Packs1
Memory GenerationDDR4
Data Transfer Rate2666 MHz
Memory Form FactorSODIMM
Additional FeaturesSynology Compatible
Computer Memory Size16 GB
Warranty DescriptionLifetime Replacement
RAM Memory TechnologyDDR4 ECC SODIMM
Column Address Strobe Latency19

Ready to buy?

NEMIX RAM 16GB (1X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM NAS Memory Compatible with Synology Diskstation and Rackstation NAS Device 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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NEMIX RAM 16GB (1X16GB) DDR4 2666MHZ PC4-21300 2Rx8 1.2V CL19 260-PIN ECC Unbuffered SODIMM NAS Memory Compatible with Synology Diskstation and Rackstation NAS Device
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