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Two green DDR5 RDIMM modules with black chips and gold contacts, no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 PC5-38400 CL40 1.1V 288-Pin ECC RDIMM Dell PowerEdge R6615

SKU CH-XW20-1YVS1

A 256 GB kit of two 128 GB DDR5 4800 ECC registered RDIMMs at CL40 and 1.1 V for the Dell PowerEdge R6615

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Capacity 256GB (2 x 128GB)

Rank 4Rx4

  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity under load
  • CL40 latency at 1.1 V operating voltage
  • Validated for Dell PowerEdge R6615 rack servers

256GB DDR5 4800 ECC RDIMM Kit

This 256GB kit contains two 128GB DDR5 4800 registered DIMMs with CL40 timing and 1.1V operation. It is built for Dell PowerEdge R6615 rack servers that require ECC registered memory. The modules use 4Rx4 organisation and 288-pin DDR5 form factor.

Verify DDR5 RDIMM slots and 4Rx4 support

Before ordering, confirm the server has available 288-pin DDR5 RDIMM slots and that the platform accepts 4Rx4 registered modules at 4800 MT/s. Check the system manual for maximum capacity per slot and population rules for dual-rank or quad-rank configurations. Ensure the BIOS is current enough to recognise 128GB density modules.

No heat spreaders or extra software included

The modules ship without heat spreaders, relying on server chassis airflow for cooling. No additional software, drivers or configuration utilities are bundled; installation is a hardware-only procedure. The kit is covered by the manufacturer’s lifetime replacement warranty and US-based technical support.

How it compares

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

Price $8,083.99
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 $31.58 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

Other versions of this model

3 more in the same range

Questions about this item

Does the kit include two 128 GB DDR5 RDIMMs or do I need to buy them separately?

The kit contains two 128 GB DDR5 4800 RDIMMs for a total of 256 GB; nothing else is required for installation.

Should I choose the 256 GB CL40 kit or a lower-capacity option for the PowerEdge R6615?

Select the 256 GB kit when the workload needs maximum memory capacity; choose a smaller kit only if the server will run lighter workloads.

What does the 4800 MT/s rating mean once the modules are installed in the R6615?

The modules run at 4800 MT/s with CL40 latency at 1.10 V, delivering the rated PC5-38400 bandwidth in the server.

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