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Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade for Dell PowerEdge XE9680

SKU CH-1KDS-FW04C

Two 64 GB DDR5 4800 CL40 ECC registered DIMMs give 128 GB for Dell PowerEdge XE9680

  • Capacity128GB (2 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 MT/s speed with PC5-38400 bandwidth
  • CL40 CAS latency for registered ECC operation
  • 2Rx4 dual-rank registered design with ECC error correction
  • Validated for Dell PowerEdge XE9680 rack servers

Dell PowerEdge XE9680 memory kit

This 128 GB kit contains two 64 GB DDR5 ECC RDIMM modules built for the Dell PowerEdge XE9680 rack server. Registered buffering and on-die ECC protect data integrity in multi-socket workloads. The modules run at 4800 MT/s with a CL40 latency at 1.1 V.

Upgrade from lower-capacity RDIMMs

Replacing smaller registered DIMMs with this 2 x 64 GB kit doubles usable slots and raises total capacity without changing voltage or speed. The jump is worth it when virtualization density, in-memory databases or GPU-accelerated AI training exceed the current memory ceiling.

128 GB capacity for dense workloads

Two ranks per module (2Rx4) and 288-pin DDR5 layout give headroom for large VM fleets and checkpoint-restart jobs. Capacity runs out when workload footprints grow beyond the installed 128 GB or when the platform's maximum supported memory per socket is reached.

Highlights

  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 MT/s speed with PC5-38400 bandwidth
  • CL40 CAS latency for registered ECC operation
  • 2Rx4 dual-rank registered design with ECC error correction
  • Validated for Dell PowerEdge XE9680 rack servers

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K2
Capacity128GB (2 x 64GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemDell
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank2Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content128GB (2X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does this kit use 288-pin DDR5 RDIMM modules that fit the Dell PowerEdge XE9680 memory slots?

Yes, each module is a 288-pin DDR5 RDIMM designed for the XE9680's registered DIMM sockets.

What is the correct sequence for installing the two 64 GB modules in the XE9680, and which step is most often missed?

Power down, open the chassis, populate the slots specified in the Dell service manual for a two-module configuration, then press each module until the ejectors click; the step most often missed is verifying the ejectors are fully locked on both ends.

When should the 128 GB kit be replaced if ECC correctable error counts start rising in the system logs?

Replace the kit when the platform's memory health monitoring reports increasing correctable errors or when a module is marked degraded by the Dell OpenManage firmware.

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