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Eight green 288-pin DDR4 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR4 2666MHz CL19 ECC RDIMM memory upgrade

SKU CH-9F1T-FC188

Eight 32 GB DDR4 2666 MHz CL19 ECC registered DIMMs totalling 256 GB for Synology NAS

  • Capacity256GB (8 x 32GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 256GB total capacity across eight 32GB modules
  • DDR4 2666MHz speed rated at PC4-21300
  • ECC registered design detects and corrects data errors
  • Low 1.2V operation reduces server power draw
  • Validated for Synology NAS compatibility with 2Rx4 rank

Synology DDR4 2666 ECC RDIMM 256GB kit

This kit supplies 256 GB of DDR4 2666 MHz registered ECC memory in eight 32 GB modules. It is built for Synology NAS systems that accept 288-pin RDIMMs and need error-correcting, registered memory for data integrity.

Best for Synology NAS expansion

The modules suit administrators expanding a compatible Synology unit that supports registered DDR4 ECC at 2666 MHz. They will not work in platforms that require unbuffered UDIMMs, non-ECC memory, or a different DDR generation.

Registered 2Rx4 ECC at CL19

Each 32 GB module is a 2Rx4 registered DIMM running at 1.2 V with CL19 latency, the specification that determines whether the host system can recognise and stabilise the full 256 GB capacity.

Points forts

  • 256GB total capacity across eight 32GB modules
  • DDR4 2666MHz speed rated at PC4-21300
  • ECC registered design detects and corrects data errors
  • Low 1.2V operation reduces server power draw
  • Validated for Synology NAS compatibility with 2Rx4 rank

Caractéristiques

BrandNEMIX RAM
SeriesSynology Compatible Series NAS Memory
ModelSynology DDR4 2666MHZ ECC RDIMM Registered Server Memory
Part NumberMR21300-324K8
Capacity256GB (8 x 32GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemSynology
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 RDIMM
Rank2Rx4
FeaturesDDR4 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (8X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Questions sur cet article

How do I install the 288-pin DDR4 RDIMM modules in my Synology NAS?

Power down the NAS, open the chassis, align each 288-pin module with the slot notch, press firmly until the retention clips click, then close the case and power on; the step often missed is seating all eight modules evenly so each register engages.

What maintenance or replacement will the ECC RDIMM kit need over time?

The modules have no heat spreaders or moving parts, so routine maintenance is limited to keeping the NAS air filters clean; if a 32 GB module ever fails, the lifetime replacement warranty covers a direct swap.

What limit appears first when the 256 GB kit runs sustained workloads?

The registered 2Rx4 organisation and CL19 latency at 2666 MT/s set the throughput ceiling; under continuous load the memory controller bandwidth saturates before the 1.20 V modules reach thermal limits.

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