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Four green 288-pin DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 512GB 4x128GB DDR5 4800 CL40 288-Pin ECC RDIMM Dell PowerEdge XE9680 memory upgrade

SKU CH-C7D4-CCYR1

512 GB DDR5 4800 ECC registered server kit with four 128 GB modules for Dell PowerEdge XE9680

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 for high throughput
  • ECC registered design detects and corrects data errors
  • 1 V operating voltage reduces power draw
  • Validated for Dell PowerEdge XE9680 rack servers

Dell PowerEdge XE9680 memory kit

This 512GB kit contains four 128GB DDR5 ECC registered DIMMs built for the Dell PowerEdge XE9680 rack server. Each module runs at 4800 MT/s with CL40 latency and 1.1V operation. The 4Rx4 organisation and registered design target enterprise workloads that demand maximum capacity and data integrity.

Thermals and power at 1.1V

Operating at 1.10V keeps power draw low for high-density server configurations. The modules ship without heat spreaders, relying on the chassis airflow of the XE9680 for cooling. Registered buffering reduces electrical load on the memory controller, supporting stable operation under sustained multi-threaded loads.

Build and daily handling

The 288-pin RDIMM form factor matches the server's memory slots for direct installation. ECC circuitry corrects single-bit errors to protect critical data in production environments. Samsung, Micron or Hynix DRAM chips are used depending on supply, all validated for Dell compatibility. No heat spreaders means modules sit flush in tight DIMM arrays.

How it compares

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

Price $14,170.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $27.68 per GB
Pricier than about 77% 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 numberMR38400-744K4
Total capacity512 GB (4 × 128 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 items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules in the Dell PowerEdge XE9680, and what step is commonly missed?

Power down the server, open the chassis, align each 288-pin module with the slot key and press firmly until both retention clips lock; the step often missed is verifying the BIOS recognises all 512GB across the four 128GB modules before closing the case

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

The modules have no heat spreaders and no moving parts, so routine maintenance is limited to keeping server airflow clean; replacement is only required if a module fails ECC correction or the system logs uncorrectable errors

What limit appears first when the 4800MHz CL40 registered DIMMs run sustained workloads on the XE9680?

The 1.10V DDR5 modules operate within JEDEC limits, so the first constraint under sustained load is typically the server’s memory-controller thermal envelope rather than the DIMMs themselves

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