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Four green DDR5 RDIMM sticks, no heat spreader

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM server RAM

SKU CH-RBWR-VJRW1

256 GB kit of four 64 GB DDR5 registered ECC RDIMMs running at 4800 MT/s with CL40 latency for Dell Precision 5860 workstations

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed with CL40 latency for responsive server workloads
  • ECC registered design detects and corrects memory errors automatically
  • 10 V operation reduces power draw in dense configurations
  • Validated for Dell Precision 5860 Tower Workstation compatibility

256GB DDR5 4800 ECC RDIMM kit

This 256GB kit contains four 64GB DDR5 4800 registered DIMMs with ECC and CL40 latency. It targets Dell Precision 5860 tower workstations and other server platforms that require registered error-correcting memory. The modules operate at 1.1V and use a 2Rx4 organisation.

288-pin registered DDR5 integration

Each module uses the standard 288-pin DDR5 RDIMM form factor and registered buffering to reduce electrical load on the memory controller. The kit frees the four populated slots for maximum capacity while leaving any remaining slots available for future expansion. Compatibility is validated for the Precision 5860 tower workstation.

Dell-compatible part number MR38400-924K4

The kit carries the Dell-specific part number MR38400-924K4 and is built with major OEM DRAM from Samsung, Micron or Hynix. No heat spreaders are fitted, allowing dense slot population in workstation chassis. The registered ECC design provides data integrity for professional workloads.

How it compares

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

Price $6,944.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $27.13 per GB
Pricier than about 88% 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 numberMR38400-924K4
Total capacity256 GB (4 × 64 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

How does the CL40 latency affect sustained throughput on this DDR5 4800 kit?

CL40 is the rated CAS latency at 4800 MT/s; sustained throughput is limited by the 40-cycle access delay combined with the 1.10 V operating voltage.

What thermal and noise impact should I expect when all four 64 GB modules run continuously?

The modules have no heat spreader and draw 1.10 V each, so they rely on chassis airflow; no active cooling means zero added noise.

Which motherboard slot type and CPU platform are required for this 288-pin RDIMM kit?

A server-class motherboard with DDR5 288-pin RDIMM slots and support for 2Rx4 registered ECC modules, such as the Dell Precision 5860 workstation platform.

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