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Two green DDR5 RDIMM modules with black chips and gold contacts

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 CL40 ECC RDIMM Dell Precision 7875 memory upgrade

SKU CH-XKYF-4ZZSX

128 GB DDR5-4800 ECC registered DIMM kit (2×64 GB, CL40, 1.1 V) validated for Dell Precision 7875 workstations

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design detects and corrects data errors
  • CL40 latency at 1.1 V operating voltage
  • Validated for Dell Precision 7875 workstation compatibility

128GB DDR5 4800 ECC RDIMM kit

This NEMIX RAM kit supplies 128GB of DDR5 4800 memory as two 64GB registered DIMMs. It is built for the Dell Precision 7875 workstation where ECC registered modules are required for system stability. The 2Rx4 organisation and 1.1V operation match the platform specifications.

Sustained load behaviour with CL40 latency

The modules run at CL40 timings under the DDR5 4800 standard, delivering consistent throughput for long compute sessions. ECC correction and registered buffering maintain data integrity when the workstation processes large datasets or runs virtualised workloads for extended periods. Samsung, Micron or Hynix components provide the underlying reliability.

Straightforward installation in approved slots

The 288-pin RDIMMs seat directly into the Precision 7875 memory slots without extra configuration. Builders who need more than 128GB or who use a non-ECC platform cannot use this kit. Always follow the Dell service manual for correct population order and firmware settings.

How it compares

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

Price $3,531.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.59 per GB
Pricier than about 77% 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 numberMR38400-924K2
Total capacity128 GB (2 × 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
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items128 GB (2 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much power does the 128GB DDR5 4800 kit draw at its 1.1V rating?

The kit runs at 1.1V, the standard DDR5 voltage, keeping power draw low for a 128GB registered ECC configuration.

What must the Dell Precision 7875 already have to accept this 2Rx4 RDIMM kit?

The workstation needs free 288-pin DDR5 RDIMM slots and a BIOS that supports registered ECC memory at 4800 MT/s.

Will the CL40 4800 modules run correctly if I keep slower DDR5 RDIMMs in the other channels?

All installed DDR5 RDIMMs will operate at the speed of the slowest module, so the 4800 CL40 kit will downclock to match older modules.

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