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Green printed circuit board with black memory chips and gold edge connectors, 288-pin DIMM form factor

A-Tech

A-Tech 16GB DDR4 2666MHz ECC RDIMM CL19 1.2V 2Rx8 Server Memory

SKU CH-AX8K-W95WD

16GB DDR4 2666MHz ECC registered DIMM with CL19 latency and 1.2V operation for Synology-compatible servers

  • Capacity16GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • 16 GB ECC RDIMM protects data integrity in server workloads
  • 2666 MHz DDR4 speed matches PC4-21300 bandwidth requirements
  • CL19 latency at 1.2 V balances responsiveness with power efficiency
  • 2Rx8 registered architecture scales capacity on 288-pin DIMM slots
  • Validated replacement for Synology D4RD-2666-16G ensures drop-in compatibility

16GB DDR4 ECC RDIMM for Synology

This 16GB DDR4 2666MHz registered ECC module uses a 288-pin DIMM form factor and runs at 1.2V with CL19 latency. It is built with major-brand chips and validated as a direct replacement for the Synology D4RD-2666-16G part. The single-rank 2Rx8 design targets server and workstation workloads.

Check motherboard support for registered ECC DDR4

Before ordering, confirm that your system accepts registered ECC DDR4 DIMMs at 2666MHz and 1.2V. Many consumer boards only support unbuffered non-ECC memory, so the module will not function if the platform requires unbuffered DIMMs. Consult the vendor's qualified-vendor list or manual to verify the exact part number is listed.

Fits servers and workstations needing registered ECC

The registered buffer reduces electrical load on the memory controller, allowing larger total capacities in multi-slot chassis. ECC capability detects and corrects single-bit errors to protect data integrity in critical applications. The module requires a platform designed for registered DDR4 DIMMs; it will not work in systems limited to unbuffered memory.

Points forts

  • 16 GB ECC RDIMM protects data integrity in server workloads
  • 2666 MHz DDR4 speed matches PC4-21300 bandwidth requirements
  • CL19 latency at 1.2 V balances responsiveness with power efficiency
  • 2Rx8 registered architecture scales capacity on 288-pin DIMM slots
  • Validated replacement for Synology D4RD-2666-16G ensures drop-in compatibility

Caractéristiques

BrandA-Tech
Capacity16GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions sur cet article

Does the package include a single 16GB module or a kit of multiple sticks?

The listing shows one 16GB DDR4 2666MHz ECC RDIMM module in a 288-pin DIMM form factor.

How do I confirm this 2Rx8 registered ECC module matches the slot population rules of my specific Synology model?

This module is specified as a compatible equivalent for Synology part D4RD-2666-16G; verify your system's qualified vendor list and maximum supported capacity per slot before installing.

What real-world bandwidth does the PC4-21300 rating deliver in a registered ECC configuration?

PC4-21300 is the JEDEC designation for DDR4-2666; actual throughput depends on your platform's memory controller, channel count and workload.

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