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A green 288-pin DDR5 RDIMM module without heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 ECC RDIMM CL40 4Rx4 1.1V Dell Compatible memory upgrade

SKU CH-N052-NFC4D

128 GB DDR5 4800 ECC registered RDIMM with CL40 latency and 1.1 V operation for compatible Dell servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB capacity supports heavy virtualization workloads
  • DDR5 4800 speed enables fast data throughput
  • ECC registered design protects data integrity
  • 10V operation reduces server power draw
  • 288-pin RDIMM form factor fits Dell systems

Dell Server Upgrade

This 128GB DDR5 registered DIMM targets Dell server and workstation owners who need high-capacity ECC memory for virtualization, database or compute workloads. The single-module design fills one slot while delivering 4800 MT/s throughput at 1.1V.

Slot-In Installation

The 288-pin RDIMM fits standard DDR5 server sockets and requires no tools beyond opening the chassis. Compatibility is validated against Dell part SNPMMWR9C/128G and AC448843; mismatched rank configurations or mixed voltages are the typical cause of POST failures.

Sustained Load Stability

Major-brand Samsung, Micron or Hynix DRAM chips are stress-tested under continuous load to maintain signal integrity at CL40 latency. Registered buffering and on-die ECC correct single-bit errors in real time, preventing data corruption during extended compute runs.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $4,091.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $31.97 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K1
Total capacity128 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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How can I confirm the 128GB DDR5 module is running at 4800 speed after installation?

Check the memory speed in your server BIOS or use a system information tool to verify it reports DDR5 4800 (PC5-38400) and CL40 latency for the installed module.

What comes in the package and do I need any extra parts to install this RDIMM?

The box contains one 128GB 288-pin DDR5 ECC RDIMM; no additional components are required if your Dell server has an available registered DIMM slot.

Which capacity and rank configuration should I select for a Dell system needing SNPMMWR9C/128G compatibility?

Choose the 128GB 4Rx4 module (part MR38400-744K1) as it matches the Dell SNPMMWR9C/128G and AC448843 specifications exactly.

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