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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 PC5-38400 CL40 4Rx4 1.1V ECC RDIMM Dell R860

SKU CH-GACT-ZBB69

512 GB DDR5 server kit with four 128 GB registered ECC modules running at 4800 MT/s CL40 for Dell PowerEdge R860

  • Capacity512GB (4 x 128GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.10V
  • ECCYes
  • 512 GB total capacity across four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 latency at 1.1 V operating voltage
  • ECC registered RDIMM with 4Rx4 organisation
  • 288-pin form factor validated for Dell PowerEdge R860

Server Memory Kit for Dell PowerEdge R860

This 512GB kit contains four 128GB DDR5 RDIMMs built for the Dell PowerEdge R860 rack server. The modules are ECC registered with a 4Rx4 organisation, targeting enterprise workloads that require maximum capacity and data integrity. IT teams upgrading memory in this specific platform can deploy the kit without configuration changes.

Thermals and Power in Normal Operation

Each module runs at 1.10V, the standard DDR5 voltage, keeping power draw predictable under sustained load. The registered design adds a clock cycle of buffering, which stabilises signalling on heavily populated channels. No heat spreaders are fitted, so airflow through the server chassis handles thermal management.

Compatibility and Validation

The part number MR38400-744K4 identifies a configuration validated for the Dell PowerEdge R860, removing guesswork from qualification testing. Modules use major OEM DRAM from Samsung, Micron or Hynix and are stress tested under load before shipment. Builders needing different capacities, speeds or form factors must select a separate kit.

Highlights

  • 512 GB total capacity across four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 latency at 1.1 V operating voltage
  • ECC registered RDIMM with 4Rx4 organisation
  • 288-pin form factor validated for Dell PowerEdge R860

Specifications

BrandNEMIX RAM
SeriesDell Series Server Memory
ModelDell Compatible DDR5 ECC Registered RDIMM
Part NumberMR38400-744K4
Capacity512GB (4 x 128GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
FeaturesDDR5 ECC Registered Server Motherboard Compatible

Questions about this item

How do I install the 288-Pin DDR5 RDIMM modules in the Dell PowerEdge R860, and what step is often missed?

Power down the server, open the chassis, and seat each 128GB module in the slots indicated by the R860 memory population guide; the step often missed is enabling the new capacity in the BIOS after the first boot.

What maintenance or replacement will the 512GB DDR5 4800 ECC RDIMM kit need later?

The modules have no heat spreaders and no moving parts, so no scheduled maintenance is required; replacement is only necessary if a module fails or capacity needs change.

What limit appears first on the 4Rx4 CL40 1.10V DDR5 kit under sustained load?

The registered 4Rx4 organisation and CL40 latency set the throughput ceiling; sustained heavy workloads will hit the DDR5 4800 bandwidth limit before voltage or thermal throttling becomes a factor.

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