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Two green DDR5 RDIMM sticks, bare chips, no heat spreader, 288-pin, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 4Rx4 1.1V ECC RDIMM server RAM

SKU CH-DSN3-RS75R

A 256GB DDR5 ECC registered server memory kit of two 128GB modules at 4800MHz CL40 1.1V 4Rx4 for Dell PowerEdge R7625

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB capacity across two 128 GB modules for large-scale virtualization workloads
  • DDR5 4800 speed with CL40 latency delivers high-throughput data handling
  • 1 V operating voltage reduces power draw in dense server deployments
  • ECC registered 4Rx4 design ensures data integrity under sustained loads
  • Validated for Dell PowerEdge R7625 compatibility for direct integration

256GB DDR5 4800 ECC RDIMM kit

This NEMIX RAM kit provides 256GB of DDR5 server memory in a matched pair of 128GB modules. The registered ECC design targets Dell PowerEdge R7625 rack servers and other platforms that require registered DIMMs. Modules operate at 4800 MT/s with a CL40 latency and 1.1V nominal voltage. The 4Rx4 organisation suits high-capacity configurations.

Verify registered DIMM support and slot count

Before ordering, confirm that your motherboard accepts 288-pin DDR5 RDIMMs and supports 4Rx4 module organisation. The system must also run at 1.1V DDR5 voltage without requiring a different voltage profile. Check the qualified vendor list or manual for 128GB per slot limits and ensure enough free slots exist for both modules.

No heat spreaders or software included

The modules ship without heat spreaders, relying on server chassis airflow for cooling. No configuration utilities, firmware tools or diagnostic software are bundled with the kit. Installation follows standard RDIMM procedures; consult the server manual for population rules and BIOS settings.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $7,953.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $31.07 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Series Server Memory
Model nameDell Compatible DDR5 ECC Registered RDIMM
Part numberMR38400-744K2
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Does the 256GB kit ship as two 128GB modules or must the second module be purchased separately?

The kit includes two 128GB RDIMMs for a total of 256GB; no additional modules are required.

Should I choose the 4Rx4 CL40 version or a different rank and latency for my Dell PowerEdge R7625?

This kit is built as 4Rx4 CL40 at 4800 MT/s to match the R7625 memory subsystem; other ranks or latencies are not validated for that platform.

What does the 4800 MT/s rating deliver once the modules are installed in the server?

The modules run at DDR5 4800 (PC5 38400) with CL40 timing at 1.1 V, providing the rated bandwidth and error correction for the qualified Dell platform.

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