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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

  • 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 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.

How it compares

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

Price $3,447.99
Pricier than about 74% 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 $26.94 per GB
Pricier than about 75% 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

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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