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Two green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 6400 CL52 2Rx4 ECC Registered RDIMM Supermicro H14DSG-O-CPU memory upgrade

SKU CH-00KD-P60G5

128 GB DDR5 registered ECC kit with two 64 GB modules at 6400 MT/s, CL52, 1.1 V, 2Rx4, 288-pin, validated for Supermicro H14DSG-O-CPU motherboards

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 128 GB kit runs at DDR5-6400 CL52 1.1 V for full-rated speed
  • 2Rx4 Registered ECC RDIMM offloads controller and corrects single-bit errors
  • Verified fit for Supermicro H14DSG-O-CPU with 288-pin RDIMM form factor
  • Major OEM Samsung Micron Hynix chips deliver enterprise-grade stability
  • Lifetime replacement warranty with free US-based technical support included

Exact-match DDR5 server upgrade

This 128GB kit delivers two 64GB DDR5 6400 Registered ECC RDIMMs built to the Supermicro H14DSG-O-CPU motherboard specification. The modules run at 1.1V with CL52 latency and a 2Rx4 organisation that the board's memory controller expects. Installing them restores full rated capacity and speed without manual tuning.

Thermals noise and power draw

Registered buffering reduces electrical load on the memory controller so each slot operates stably at the rated 1.1V. The modules ship without a heat spreader, relying on the server chassis airflow that the platform already provides. Power consumption stays within the DDR5 6400 JEDEC envelope for this density and rank configuration.

Sustained load behaviour

ECC circuitry corrects single-bit errors on the fly during continuous operation, preventing silent data corruption that can crash production workloads. Registered architecture maintains signal integrity when all populated channels run at DDR5 6400 for extended periods. The kit is validated for full-capacity population per the motherboard's qualified vendor list.

How it compares

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

Price $4,547.99
Pricier than about 78% 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 $35.53 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 numberMR51200-924K2
Total capacity128 GB (2 × 64 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 2 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install the 2Rx4 RDIMMs in the Supermicro H14DSG-O-CPU and which population rule do people miss?

Power down the server, open the chassis, and seat both 288-pin DDR5 RDIMMs in the slots the manual lists first for a two-DIMM-per-channel configuration; the step most often missed is following the exact population order so the memory controller enables all 128 GB at 6400 MT/s.

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

Registered ECC modules have no moving parts or user-serviceable components; the only replacement scenario is a rare DIMM failure, which the lifetime warranty covers with a direct swap of the faulty 64 GB stick.

What is the first limit that appears when the kit runs at 6400 MT/s under sustained load?

The CL52 CAS latency at 1.10 V is the primary timing boundary; if thermals or voltage droop push the controller past its timing budget, the memory controller will throttle frequency before any other constraint is reached.

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