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Green circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 16GB DDR4 2666MHz PC4-21300 CL19 2Rx4 1.2V 288-Pin ECC RDIMM HPE Compatible memory upgrade

SKU CH-6GYF-GNWPQ

16 GB DDR4 2666 MHz ECC registered RDIMM for HPE servers, CL19 2Rx4 1.2 V 288-pin

  • Capacity16GB
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 16 GB DDR4 ECC registered RDIMM for HPE server reliability
  • 2666 MHz PC4-21300 CL19 speed for responsive workloads
  • 2 V low-voltage operation reduces power draw
  • 2Rx4 dual-rank layout maximises memory density
  • Validated against HPE 835955 part numbers for drop-in fit

16 GB DDR4-2666 ECC RDIMM for HPE servers

This 16 GB registered DDR4 module runs at 2666 MHz with CL19 latency and 1.20 V operation. It is built for HPE server and workstation platforms that require ECC RDIMM memory. The 2Rx4 organisation and 288-pin form factor match the HPE 835955-X21, 835955-H21 and 835955-K21 part numbers.

Sustained load behaviour

Registered buffering and on-die ECC keep data integrity stable during continuous workloads such as virtualisation, database processing or scientific computing. The module is stress-tested under load before shipment to verify reliable operation over extended periods. Major-brand Samsung, Micron or Hynix DRAM chips provide consistent timing at the rated PC4-21300 speed.

Pre-order checklist

Confirm your system accepts DDR4-2666 registered ECC RDIMMs and that the memory slots support 2Rx4 modules at 1.20 V. Verify the maximum supported capacity per slot and the total number of available 288-pin slots. Check the HPE service manual for any population rules or firmware requirements before installation.

Highlights

  • 16 GB DDR4 ECC registered RDIMM for HPE server reliability
  • 2666 MHz PC4-21300 CL19 speed for responsive workloads
  • 2 V low-voltage operation reduces power draw
  • 2Rx4 dual-rank layout maximises memory density
  • Validated against HPE 835955 part numbers for drop-in fit

Specifications

BrandNEMIX RAM
SeriesHPE Server/Workstation Compatible Series Memory
ModelHPE DDR4 2666MHZ ECC RDIMM Registered Server Memory
Part NumberMR21300-628K1
Capacity16GB
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemHPE
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 RDIMM
Rank2Rx4
FeaturesDDR4 ECC Registered RDIMM Server Motherboard Compatible
Package Content16GB (1X16GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V CL19 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much power does this 1.2V DDR4 RDIMM draw when the server runs continuously?

Each module operates at 1.2V, the standard DDR4 voltage, so power draw stays low even under sustained 2666MHz workloads in HPE servers.

What must the motherboard provide for this 288-pin ECC registered DIMM to function?

The board needs DDR4 RDIMM slots that support registered ECC memory and a 2666MHz memory controller; the 2Rx4 organisation is handled by the module itself.

Can this 2Rx4 PC4-21300 module share a channel with 1Rx4 or 2Rx8 sticks in an HPE platform?

Mixed-rank populations are platform-dependent; HPE's own memory guides list which rank combinations are validated for each server model.

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