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Green rectangular DDR5 RDIMM circuit board with gold contacts and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 6400MHz 4Rx4 ECC RDIMM Supermicro X14SBM-TP4F memory upgrade

SKU CH-1287-5J2GJ

A 128GB DDR5 6400MHz ECC RDIMM module built for Supermicro X14SBM-TP4F servers

  • Total capacity128 GB
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank4Rx4
  • 128 GB capacity expands server memory for heavy workloads
  • DDR5 6400 MHz speed delivers high data throughput
  • ECC registered design corrects errors for mission-critical stability
  • 1 V operation reduces power draw per module
  • Validated for Supermicro X14SBM-TP4F ensures plug-and-play compatibility

128GB DDR5 6400MHz ECC RDIMM

This 128GB DDR5 6400MHz ECC RDIMM module is built for the Supermicro X14SBM-TP4F platform. It targets server and workstation administrators who need registered memory with error correction for mission-critical workloads. The single-module design fills one 288-pin slot with a 4Rx4 configuration.

Sustained load behaviour

The module operates at 1.10V with a CAS latency of 52, delivering PC5-51200 bandwidth under continuous demand. Registered buffering and on-die ECC maintain data integrity during extended compute tasks such as AI inference or database processing. Major OEM DRAM from Samsung, Micron or Hynix is stress-tested under load before shipment.

Installation notes

Installation follows standard RDIMM procedure: align the 288-pin edge connector and press until the retention clips engage. No heat spreader is fitted, so airflow across the bare PCB must be adequate. The system BIOS must support 128GB 4Rx4 DDR5 modules; incompatible firmware will prevent boot or reduce capacity.

How it compares

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

Price $4,622.99
Pricier than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $36.12 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSupermicro Compatible Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server RAM
Part numberMR51200-744K1
Total capacity128 GB
Product type288-PIN DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (1 × 128 GB) DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM

Questions about this item

How much power does the 1.1V DDR5 6400MHz module add to a server chassis running all day?

Each module operates at 1.10V; total power draw depends on how many slots the Supermicro X14SBM-TP4F board populates and the workload applied.

What motherboard slot and firmware must already be present for this 288-pin ECC RDIMM to function?

A Supermicro X14SBM-TP4F motherboard with a DDR5 RDIMM slot and BIOS that recognises 4Rx4 registered modules is required.

Will this CL52 4Rx4 stick train correctly alongside older DDR5 modules already installed in the same server?

Mixing ranks or latencies can prevent training; the board will run all channels at the slowest common timing, so identical modules are recommended.

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