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Four green DDR5 RDIMM modules, bare chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 ECC RDIMM CL40 1.1V memory upgrade

SKU CH-A17H-DY56W

128 GB registered DDR5 ECC kit with four 32 GB modules at 4800 MT/s CL40 and 1.1 V

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity across four 32 GB modules
  • DDR5 4800 MT/s speed for high-throughput server workloads
  • ECC registered RDIMM design protects data integrity
  • 1 V operating voltage reduces power draw
  • Validated for SuperMicro X13SEI-F and X13SEI-TF motherboards

Capacity and kit layout

This kit provides 128GB of DDR5 memory across four 32GB registered DIMMs. It targets administrators upgrading SuperMicro X13SEI-F or X13SEI-TF platforms that require ECC RDIMM modules. The 1Rx4 organisation suits high-density server configurations.

Registered ECC with on-die ECC

Each module operates at 1.1V with a CL40 latency and includes on-die error-correction plus registered buffering. The combination reduces electrical load on the memory controller while protecting data integrity under sustained workloads. No heat spreaders are fitted.

4800 MT/s headroom and limits

Running at DDR5-4800 (PC5-38400) the kit delivers ample throughput for virtualisation, database and compute tasks on supported SuperMicro boards. Capacity scales to the board’s maximum slot count; workloads needing higher clock speeds or lower latency will exceed this specification.

How it compares

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

Price $3,499.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.34 per GB
Pricier than about 76% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K4
Total capacity128 GB (4 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 288-pin DDR5 RDIMM modules need any periodic maintenance or replacement once installed?

DDR5 RDIMM modules are solid-state components with no moving parts and require no scheduled maintenance or replacement under normal server operating conditions.

What limit appears first when the 4800 MHz CL40 kit runs at full load for extended periods?

The registered buffer and ECC logic impose the primary latency ceiling, so sustained throughput is bounded by the CL40 timing at 4800 MT/s rather than thermal or power limits.

How much heat and power does the 1.1 V 128 GB kit produce when the server runs all day?

Operating at 1.1 V across four 32 GB ranks keeps power draw low and heat output minimal, allowing standard server airflow to maintain stable temperatures without additional cooling.

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