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Four green DDR5 RDIMM modules in a clear tray

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 2Rx8 ECC RDIMM Dell PowerEdge XE9640 memory upgrade

SKU CH-69DP-PEMGP

A 128GB kit of four 32GB DDR5 4800 ECC registered DIMMs with CL40 latency for Dell PowerEdge XE9640 servers

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity across four 32 GB modules expands server memory headroom
  • DDR5 4800 speed delivers high bandwidth for demanding workloads
  • ECC registered design detects and corrects errors to protect data integrity
  • 2Rx8 organisation with 1.10 V operation optimises density and power efficiency
  • 288-pin RDIMM form factor ensures direct compatibility with Dell PowerEdge XE9640

Dell PowerEdge XE9640 server memory kit

This 128GB kit contains four 32GB DDR5 RDIMM modules built for the Dell PowerEdge XE9640. Each module runs at 4800MHz with CL40 latency and operates at 1.10V. Registered ECC design adds error correction for data integrity in continuous workloads.

Suited for IT teams expanding Dell PowerEdge

The kit targets administrators who need registered ECC memory validated for this specific Dell platform. It is not for desktop PCs, laptops or workstations that require unbuffered non-ECC UDIMM modules. Systems using different DDR generations or pin counts cannot accept these DIMMs.

2Rx8 rank organisation determines platform fit

Each 32GB module uses a 2Rx8 configuration across the 288-pin DDR5 interface. The Dell PowerEdge XE9640 memory controller must support this rank structure for the kit to initialise correctly. Verify the server specification before ordering.

How it compares

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

Price $3,341.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $26.11 per GB
Pricier than about 72% 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 numberMR38400-328K4
Total capacity128 GB (4 × 32 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 rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What CAS latency do the four 32 GB sticks run at under sustained load?

The modules operate at CL40, which is the rated latency for the DDR5 4800 kit.

What power draw and thermal output should I expect from the 1.10 V registered DIMMs running continuously?

Each DIMM runs at 1.10 V; registered DDR5 at this voltage typically draws only a few watts per module, so heat stays low in a Dell PowerEdge XE9640 chassis.

Which server platform must already be installed for this 288-pin RDIMM kit to function?

The kit is validated for the Dell PowerEdge XE9640; the motherboard must provide DDR5 RDIMM slots with ECC support.

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