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Two green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 PC5-38400 4Rx4 1.1V 288-Pin ECC RDIMM Dell R860

SKU CH-2EJX-BQBF0

256 GB DDR5-4800 ECC registered server memory kit, two 128 GB 4Rx4 modules at 1.1 V for Dell PowerEdge R860

  • 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 total capacity for large workloads via 2 x 128 GB modules
  • DDR5 4800 speed transfers data at PC5-38400 bandwidth
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces server power draw
  • Validated for Dell PowerEdge R860 compatibility

NEMIX RAM 256GB DDR5 4800 RDIMM kit

This registered DDR5 ECC kit provides 256GB in two 128GB modules running at 4800 MT/s with CL40 latency at 1.10V. It is built for Dell PowerEdge R860 rack servers that require registered memory. The 4Rx4 organisation suits high-density configurations.

IT teams scaling Dell R860 memory

Administrators expanding a Dell PowerEdge R860 to larger datasets or virtualization workloads can use this matched pair. It is not for systems that accept only unbuffered UDIMMs or that limit rank count below 4Rx4. Workstations or consumer boards without registered DDR5 support cannot use these modules.

No heat spreaders or extra software

Modules ship without heat spreaders, relying on server chassis airflow for cooling. No management utilities or firmware tools are bundled; configuration is handled entirely through the platform BIOS. The lifetime replacement warranty is a supplier commitment, not an included software feature.

How it compares

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

Price $8,423.99
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 $32.91 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

What motherboard slot type is needed for the 288-pin RDIMM modules?

The kit uses 288-pin DDR5 RDIMM modules that require a server motherboard with matching DDR5 RDIMM slots.

Can the 4Rx4 rank modules run alongside existing 2Rx4 sticks in the same server?

Mixing 4Rx4 and 2Rx4 ranks is possible only if the system memory controller and BIOS support mixed-rank configurations.

How can I confirm the CL40 timing and 1.10V voltage are active after installation?

Check the BIOS memory information screen or run a tool such as CPU-Z to verify the reported speed, latency and voltage values.

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