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Four green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 6400MHz CL52 ECC RDIMM for Dell PowerEdge XE9685L memory upgrade

SKU CH-NR80-5VE1Y

A 512GB registered DDR5 ECC kit of four 128GB modules at 6400MHz CL52, 1.1V, 288-pin 4Rx4 for Dell PowerEdge XE9685L servers

  • Capacity512GB (4 x 128GB)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • Compatible SystemDell

Size 512GB 4X128GB

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Speed 6400MHz

  • Massive 512 GB capacity from four 128 GB modules
  • DDR5 6400 MHz speed with CL52 latency
  • ECC registered RDIMM ensures data integrity
  • Low 1.1 V operating voltage reduces power draw
  • Built for Dell PowerEdge XE9685L rack servers

Dell PowerEdge XE9685L memory kit

This 512GB kit contains four 128GB DDR5 ECC RDIMM modules built for the Dell PowerEdge XE9685L rack server. Each module runs at 6400MHz with a CAS latency of CL52 and operates at 1.1V. The registered design and on-die error correction protect data integrity in enterprise workloads.

Thermals and power at 1.1V

Operating at 1.10V keeps power draw low for a 512GB configuration. The modules have no heat spreader, relying on the server's directed airflow for cooling. Registered buffering reduces electrical load on the memory controller, contributing to stable thermals during normal multi-threaded operation.

Sustained load behaviour

The 4Rx4 organisation provides high density across 288 pins, maintaining bandwidth during extended compute tasks. ECC detection and correction runs continuously without throttling throughput. Registered signalling preserves signal integrity across all four slots under prolonged heavy memory pressure.

Puntos fuertes

  • Massive 512 GB capacity from four 128 GB modules
  • DDR5 6400 MHz speed with CL52 latency
  • ECC registered RDIMM ensures data integrity
  • Low 1.1 V operating voltage reduces power draw
  • Built for Dell PowerEdge XE9685L rack servers

Especificaciones

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-744K4
Capacity512GB (4 x 128GB)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemDell
CAS LatencyCL52
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content512GB (4 x 128GB) DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM KIT

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Preguntas sobre este artículo

How do I install the 4Rx4 DDR5 RDIMMs in the Dell PowerEdge XE9685L, and which step is commonly missed?

Power down the server, open the chassis, align each 288-pin module with the correct DIMM slot per the Dell service guide, press firmly until both latches click, then verify in BIOS that all 512 GB are detected at 6400 MHz — the step often missed is confirming the memory configuration mode matches the 4Rx4 population rules.

What maintenance or replacement will the 128 GB ECC RDIMMs need over their service life?

No scheduled maintenance is required for the modules themselves; keep the server air filters clean so the 1.1 V DRAM stays within thermal limits, and replace a stick only if the system logs an uncorrectable ECC error on one of the four ranks.

What limit appears first when the 6400 MHz kit runs sustained workloads on the XE9685L?

The 4Rx4 organisation places a heavier electrical load on the memory controller, so the first constraint under sustained use is typically the maximum supported DIMM-per-channel count at 6400 MHz — if the platform cannot drive all four modules at that speed, the BIOS will down-clock the kit to the next supported data rate.

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