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Four green DDR5 RDIMM modules without heat spreaders in a matched kit

NEMIX RAM

NEMIX RAM 256GB (4×64GB) DDR5 6400 CL52 2Rx4 ECC Registered RDIMM memory upgrade

SKU CH-6JMG-Z9C1E

A 256 GB kit of four 64 GB DDR5-6400 registered ECC RDIMMs at CL52 and 1.1 V for ASRock Rack GNRD16DNO and GNRD16QM3-NL motherboards

  • Capacity256GB (4 x 64GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes

Size 256GB 4X64GB

Show 4 more configurations
  • 256 GB total capacity from four 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.10 V
  • Registered ECC design corrects single-bit errors on the fly
  • 2Rx4 dual-rank organisation fully populates every slot
  • Exact fit for ASRock Rack GNRD16DNO and GNRD16QM3-NL motherboards

256GB DDR5-6400 ECC Registered RDIMM Kit

This NEMIX RAM kit provides 256GB of DDR5 memory in four 64GB modules. It operates at 6400MHz (PC5-51200) with CL52 latency and 1.10V voltage. The 288-pin Registered DIMMs feature 2Rx4 organisation and on-die ECC for error correction. It is built for servers requiring registered memory architecture.

Suited for ASRock Rack GNRD16DNO

This kit matches the specific memory population rules and registered DIMM requirement of the listed ASRock Rack boards. It is not for systems that accept only unbuffered UDIMMs or SO-DIMMs. Builders needing consumer desktop memory or laptop modules should look elsewhere. It also does not fit platforms limited to lower maximum capacities per slot.

2Rx4 Registered ECC architecture decides fit

The dual-rank 2Rx4 registered design with ECC is the single specification that determines compatibility. Your motherboard must support registered RDIMMs and this specific rank structure to initialise all four modules at the rated 6400MHz speed. Verify your system manual for approved DIMM population order before purchase.

Highlights

  • 256 GB total capacity from four 64 GB modules
  • DDR5 6400 speed with CL52 latency at 1.10 V
  • Registered ECC design corrects single-bit errors on the fly
  • 2Rx4 dual-rank organisation fully populates every slot
  • Exact fit for ASRock Rack GNRD16DNO and GNRD16QM3-NL motherboards

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-924K4
Capacity256GB (4 x 64GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL52
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemASRock Rack
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content256GB 4X64GB DDR5 6400MHz PC5-51200 2Rx4 1.1V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

How much power does each 64GB DDR5 6400 module draw at its rated 1.10V voltage?

Each module operates at 1.10V, the standard DDR5 voltage, so total kit power scales with the four 2Rx4 registered DIMMs your motherboard populates.

Which motherboard must I already own for this 256GB kit to be recognised at full speed?

The kit is validated for ASRock Rack GNRD16DNO and GNRD16QM3-NL motherboards that accept 288-pin DDR5 RDIMMs at 6400 MT/s.

Will these 2Rx4 registered ECC DIMMs work in a system that currently uses 1Rx8 unbuffered DDR5?

No — registered RDIMMs require a motherboard wired for buffered memory; mixing with unbuffered UDIMMs is not supported.

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