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Green rectangular DDR5 RDIMM module with black chips, no heat spreader, gold edge connector

NEMIX RAM

NEMIX RAM 128GB DDR5 6400 CL52 2Rx4 1.1V ECC RDIMM Supermicro H14DSG-O-CPU memory upgrade

SKU CH-Z1JB-6B4GM

128 GB DDR5-6400 ECC registered RDIMM with CL52 latency and 1.1 V operation, validated for the Supermicro H14DSG-O-CPU motherboard

  • Total capacity128 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity maximises server memory density
  • DDR5 6400 speed delivers high bandwidth for demanding workloads
  • CL52 latency ensures responsive data access at rated frequency
  • 1 V operation reduces power draw per module
  • ECC registered design corrects errors and supports full population

Exact-match DDR5-6400 upgrade

This 128 GB DDR5-6400 ECC registered DIMM is built for the Supermicro H14DSG-O-CPU motherboard. It delivers the precise 2Rx4 rank structure, 1.10 V operating voltage and CL52 latency the platform expects. The 288-pin RDIMM form factor matches the board's registered-memory requirement. System integrators and IT teams use it to expand memory capacity without compatibility risk.

Sustained-load behaviour

Registered buffering offloads the memory controller so every populated slot runs at the rated 6400 MT/s transfer rate continuously. ECC corrects single-bit errors on the fly, preventing silent data corruption during long compute jobs. The module maintains its specified timings across full population without downclocking. Workloads such as virtualization, database serving and scientific simulation benefit from the stable throughput.

Thermals noise power

The module operates at the standard DDR5 1.10 V with no integrated heat spreader. Passive cooling relies on chassis airflow directed across the DIMM slots. Power draw scales with the 128 GB capacity and 6400 MT/s data rate under load. Acoustic output is zero; the only sound comes from system fans moving air over the sticks. Builders who need active DIMM cooling or lower-voltage operation should verify platform support before ordering.

How it compares

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

Price $4,749.99
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 $37.11 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-724K1
Total capacity128 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How much heat and power does the 1.1V DDR5 6400 RDIMM generate when the server runs all day?

The modules operate at 1.1V, the standard DDR5 voltage, so power draw and heat output stay within the server's normal thermal envelope for registered ECC memory.

What motherboard and DIMM slots must I already have for this 288-pin RDIMM kit to work?

You need a Supermicro H14DSG-O-CPU motherboard with DDR5 RDIMM slots and a memory controller that supports 2Rx4 registered ECC at 6400 MT/s.

Will this 128GB CL52 kit run correctly alongside older DDR5 RDIMMs I keep in the other channels?

Mixing different ranks, speeds or latencies can force the controller to downclock all channels; the board manual specifies the approved population order for full 6400 MT/s operation.

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