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Single green DDR5 RDIMM module, black chips on both sides, gold edge connector, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 4Rx4 ECC RDIMM Dell R760xa memory upgrade

SKU CH-RSV2-6HP64

128GB DDR5 4800 ECC registered RDIMM with CL40 latency and 1.10V operation for Dell PowerEdge R760xa servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity scales memory-intensive workloads
  • DDR5 4800 speed feeds data to modern CPUs
  • ECC registered design protects data integrity
  • 1 V operation reduces server power draw
  • Validated for Dell PowerEdge R760xa compatibility

Dell R760xa server upgrade

This 128GB DDR5 module is built for the Dell PowerEdge R760xa rack server. It delivers registered ECC memory for workloads that require data integrity and high capacity in a single slot. IT teams use it to expand memory density without adding modules.

Thermals and power

The module runs at 1.1V with no heat spreader, relying on the server's directed airflow for cooling. Registered buffering and ECC add minimal overhead while maintaining signal integrity under sustained load. Power draw stays consistent with standard DDR5 RDIMM operation.

Build integration

The 288-pin RDIMM fits directly into the R760xa memory slots and operates at 4800MHz CL40 with 4Rx4 organization. It frees additional DIMM slots for future expansion while providing 128GB per module. Buyers needing non-ECC memory or desktop form factors cannot use this module.

How it compares

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

Price $3,726.99
Pricier than about 75% 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 $29.12 per GB
Pricier than about 82% 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 do I install the 288-pin DDR5 RDIMM in a Dell PowerEdge R760xa, and which step is most often missed?

Power down the server, open the chassis, locate the DDR5 slots, align the notch on the 288-pin module with the slot key, press firmly until the ejector clips click, then verify the new 128GB capacity in the BIOS or iDRAC — the step most often missed is confirming the module is fully seated by checking both clips are locked.

What maintenance or replacement will this 4Rx4 ECC registered module need over its service life?

No scheduled maintenance is required; the module has no heat spreader and operates at 1.10V, so keep the server air filters clean and monitor ECC corrected-error counters in the system log — if uncorrectable errors appear, replace the DIMM.

What limit appears first when this CL40 4800 MT/s module runs sustained workloads?

The CAS latency of CL40 at 4800 MT/s sets the baseline response time; under continuous heavy load the memory controller’s thermal throttling or the 1.1V voltage regulator’s current limit will typically cap sustained throughput before the module itself reaches a hard limit.

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