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Four green DDR4 RDIMM modules, 288 pins each, no heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 2666 ECC RDIMM memory upgrade

SKU CH-A0RB-1AZ1E

Four-module 64 GB DDR4 2666 ECC registered DIMM kit validated for Synology FS6400 NAS

  • Capacity64GB (4 x 16GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • ECC protection guards data integrity in Synology FS6400 NAS
  • Registered signal buffering stabilises 64GB capacity across four modules
  • 2666 MHz DDR4 speed matches PC4-21300 system spec
  • 20 V operation lowers heat in dense server chassis
  • Major OEM Samsung, Micron, Hynix chips ensure validated reliability

Synology FS6400 DDR4 ECC RDIMM kit

This 64GB kit contains four 16GB DDR4 2666 registered DIMMs built for the Synology FS6400 NAS. ECC and registered operation protect data integrity in always-on storage workloads. The modules run at 1.2V with CL19 latency and use a 1Rx4 organisation.

Installing four 288-pin RDIMMs

Installation follows the NAS manufacturer's guide: power down, open the chassis, populate the indicated slots and secure the latches. Registered ECC modules must match the system's qualified-vendor list; mixing unbuffered or non-ECC DIMMs will prevent boot. The kit is validated for the FS6400 so compatibility errors are unlikely when the manual is followed.

64GB total capacity in four modules

The single deciding specification is the 64GB (4x16GB) capacity configured as registered ECC RDIMMs at DDR4 2666. Systems that require unbuffered memory, a different speed grade or a higher density per module cannot use this kit. Buyers needing more than 64GB or non-ECC memory should select a different part.

Points forts

  • ECC protection guards data integrity in Synology FS6400 NAS
  • Registered signal buffering stabilises 64GB capacity across four modules
  • 2666 MHz DDR4 speed matches PC4-21300 system spec
  • 20 V operation lowers heat in dense server chassis
  • Major OEM Samsung, Micron, Hynix chips ensure validated reliability

Caractéristiques

BrandNEMIX RAM
SeriesSynology Compatible Series NAS Memory
ModelSynology DDR4 2666MHZ ECC RDIMM Registered Server Memory
Part NumberMR21300-614K4
Capacity64GB (4 x 16GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemSynology
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 RDIMM
Rank1Rx4
FeaturesDDR4 ECC Registered RDIMM Server Motherboard Compatible
Package Content64GB (4X16GB) DDR4 2666MHZ PC4-21300 1Rx4 1.2V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Questions sur cet article

Will the Synology FS6400 recognise all four 16 GB modules at 2666 MT/s after installation?

The kit contains four 16 GB registered ECC RDIMMs rated DDR4-2666 CL19 1.20 V; the NAS firmware will display 64 GB total capacity running at the rated speed once POST completes.

Does the package include only the four memory modules or any extra parts such as a heat spreader or tools?

The box holds the four 288-pin DDR4 RDIMMs and nothing else; no heat spreaders, screws or installation tools are supplied.

Is the 64 GB (4×16 GB) kit the only capacity option available for this Synology-compatible DDR4-2666 registered ECC line?

This specific part number MR21300-614K4 is offered as a 64 GB kit of four 16 GB modules; other capacities would carry different part numbers.

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