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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM DDR5 768GB (12x64GB) 6400MHz CL52 1.1V 2Rx4 ECC RDIMM Supermicro H14DSG-O-CPU

SKU CH-N272-YKBPY

768 GB registered ECC DDR5 kit with twelve 64 GB modules at 6400 MHz CL52, validated for the Supermicro H14DSG-O-CPU motherboard

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 768 GB total capacity from 12 matched 64 GB modules for maximum server density
  • DDR5 6400 MT/s (PC5-51200) CL52 at 1.1 V delivers rated throughput without tuning
  • 2Rx4 Registered ECC RDIMM architecture offloads the controller and corrects single-bit errors
  • 288-pin RDIMM form factor verified for Supermicro H14DSG-O-CPU motherboard population rules
  • Lifetime replacement warranty with US-based technical support included

768GB DDR5 ECC RDIMM Kit for Supermicro H14DSG-O-CPU

This 12-module kit delivers 768GB of DDR5-6400 registered ECC memory built for the Supermicro H14DSG-O-CPU motherboard. Each 64GB module operates at 1.1V with CL52 latency and a 2Rx4 organisation. The 288-pin RDIMM form factor matches the board's registered DIMM slots exactly.

Sustained-load behaviour

Registered buffering reduces electrical load on the memory controller so all twelve slots can run fully populated at rated speed without signal degradation. ECC corrects single-bit errors on the fly, preventing silent data corruption during long compute runs. The 1.1V operating voltage keeps power draw predictable under continuous utilisation.

DDR5-6400 interface practical limits

The PC5-51200 interface provides the bandwidth ceiling for this configuration; actual throughput depends on the motherboard's memory-controller implementation and population rules. Mixing ranks or voltages beyond the specified 2Rx4 1.1V profile will prevent the kit from operating at its rated 6400MT/s. Consult the system manual for approved DIMM population order before installation.

How it compares

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

Price $24,425.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $31.80 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 numberMR51200-924K12
Total capacity768 GB (12 × 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 items768 GB 12 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How much power does the 768GB kit draw at its rated 1.10V DDR5 speed?

Each 64GB module operates at 1.10V; total draw depends on how many of the 12 sticks are populated and the server's memory-controller load.

What motherboard slot type and population rules must my Supermicro H14DSG-O-CPU follow for this 12x64GB RDIMM kit?

The board requires 288-pin DDR5 RDIMM slots; install all 12 modules in the exact population order shown in the motherboard manual to reach 768GB at 6400MHz.

Will these CL52 6400MHz registered ECC modules run stably alongside older DDR5 RDIMMs that have different latencies or ranks?

Mixing ranks, latencies or voltages is not supported; the memory controller will downclock all slots to the slowest common settings, risking instability.

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