D4EC-2666-16G Synology 16GB PC4-21300 288-pin DDR4 SDRAM UDIMM
D4EC-2666-16G Overview
The Synology D4EC-2666-16G is a specialized, server-grade 16GB DDR4 memory module specifically engineered for high-performance Synology Network Attached Storage (NAS) enclosures. Operating at a native speed of 2666MHz (PC4-21300), it provides a stable, high-bandwidth memory expansion designed to handle demanding enterprise data pipelines, containerized applications (Docker), virtualization hosting, and continuous backup streams.
A defining characteristic of this module is its ECC Unbuffered (ECC UDIMM) architecture packaged into a standard 288-pin form factor. Unlike standard consumer desktop RAM, it includes dedicated error-correcting circuitry to protect data integrity, but omits the register buffers found in large virtualization server RAM.
$1,699
D4EC-2666-16G Technical Specifications
Synology 16GB PC4-21300 288-pin DDR4 SDRAM UDIMM
Manufacturer: Synology
Part Number: D4EC-2666-16G
Capacity: 16 GB
Memory Type: DDR4 SDRAM
Module Type: 288-Pin UDIMM (ECC Unbuffered DIMM)
Bus Speed: 2666 MHz (PC4-21300)
Data Transfer Rate: 21.3 GB/s
Error Correction: ECC (Error Correcting Code)
Signal Processing: Unbuffered
Operating Voltage: 1.2V
Form Factor: Standard DIMM Height
Contact Pins: 288-Pin Gold-Plated
Standard: JEDEC compliant
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