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Green circuit board with gold edge connectors and black memory chips

NEMIX RAM

NEMIX RAM 32GB DDR4 2666 ECC LRDIMM CL19 HPE Z640 memory upgrade

SKU CH-JVFC-5RCRB

A 32 GB DDR4 2666 ECC LRDIMM module with CL19 latency and 1.2 V operation for HPE Z640 servers

  • Capacity2TB (16 x 128GB)
  • SpeedDDR4 2666 (PC4 21300)
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 32 GB capacity supports large server workloads
  • DDR4 2666 speed handles intensive data tasks
  • ECC LRDIMM design protects data integrity under load
  • 2 V operation reduces power draw in dense configs
  • 288-pin 2Rx4 module fits HPE Z640 slots

HPE Z640 server upgrade

This 32 GB DDR4 2666 module is built for the HPE Z640 workstation and server platform. It delivers ECC protection and load-reduced signalling in a single 288-pin LRDIMM. The 1.2 V operating voltage matches the platform specification.

2Rx4 load-reduced design

The 2Rx4 organisation reduces electrical load on the memory controller, allowing larger total capacities than standard RDIMMs. No heat spreader is fitted, so the module relies on chassis airflow. It installs directly into any compatible DDR4 slot on the Z640 motherboard.

32 GB per module headroom

Each stick provides 32 GB at CL19 latency, scaling toward the 2 TB maximum supported by a 16-slot configuration. The DDR4 2666 speed ceiling is fixed by the platform; workloads needing higher bandwidth or lower latency would require a newer generation.

Highlights

  • 32 GB capacity supports large server workloads
  • DDR4 2666 speed handles intensive data tasks
  • ECC LRDIMM design protects data integrity under load
  • 2 V operation reduces power draw in dense configs
  • 288-pin 2Rx4 module fits HPE Z640 slots

Specifications

BrandNEMIX RAM
SeriesHPE Server/Workstation Compatible Series Memory
ModelHPE DDR4 2666MHZ ECC LRDIMM Load Reduced Server Memory
Part NumberML21300-324K1
Capacity2TB (16 x 128GB)
SpeedDDR4 2666 (PC4 21300)
ECCYes
Buffered/RegisteredLoad Reduced
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemHPE
CAS LatencyCL19
Heat SpreaderNo
Type288-Pin DDR4 LRDIMM
Rank2Rx4
FeaturesDDR4 ECC LRDIMM Load Reduced Server Motherboard Compatible
Package Content32GB (1X32GB) DDR4 2666MHZ PC4-21300 2Rx4 1.2V CL19 288-PIN ECC LRDIMM Load Reduced Server Memory

Questions about this item

Does the 2Rx4 rank configuration limit how many modules the HPE Z640 can accept?

The module uses a 2Rx4 organisation, which the Z640 memory controller treats as two logical ranks per DIMM; total rank count across all populated slots must stay within the platform limit.

What thermal load does the 1.2 V LRDIMM add when the server runs continuously?

At 1.2 V the DDR4 LRDIMM draws less power per bit than standard registered DIMMs, and the onboard register buffers reduce signal loading, so sustained heat output stays modest.

Which motherboard feature must the Z640 already provide for this ECC LRDIMM to function?

The workstation must support DDR4 2666 LRDIMM with ECC and 288-pin slots; without that chipset and BIOS support the module will not initialise.

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