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Twelve green DDR5 RDIMM modules in a row, each with black chips and gold contacts, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 ECC RDIMM 768GB 12x64GB 6400MHz CL52 1.1V 2Rx4 Supermicro H14DSG-OD memory upgrade

SKU CH-MR7Y-GGZD7

768GB DDR5 ECC registered memory kit with twelve 64GB modules at 6400MHz CL52 1.1V for Supermicro H14DSG-OD servers

  • 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 twelve 64 GB modules for maximum memory density
  • DDR5 6400 MT/s rated speed with CL52 latency for high-throughput server workloads
  • Registered ECC design with 2Rx4 organisation to maintain stability at full population
  • 1 V operating voltage matching the Supermicro H14DSG-OD memory controller specification
  • 288-pin RDIMM form factor verified for exact-fit compatibility with the target motherboard

Exact-match 768 GB DDR5 kit

This 768 GB kit contains twelve 64 GB DDR5 6400 RDIMM modules rated at CL52 and 1.1 V. It is built for the Supermicro H14DSG-OD motherboard and delivers registered ECC memory that the platform recognises at full capacity.

Sustained-load behaviour

Registered architecture offloads the memory controller so all twelve slots can remain fully populated at the rated 6400 MT/s without downclocking. ECC corrects single-bit errors on the fly to prevent silent data corruption during continuous operation.

Pre-order checks

Verify the motherboard manual for supported capacities, approved DIMM population order and installation steps before ordering. The kit uses 288-pin RDIMM form factor and will not fit UDIMM or SODIMM slots.

How it compares

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

Price $27,425.99
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 $35.71 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 heat does a fully populated 12-module DDR5 6400MHz CL52 kit add to a server running 24/7?

Each module runs at 1.10V without a heat spreader, so total thermal load depends on your chassis airflow and the H14DSG-OD's DIMM spacing rather than a fixed wattage figure.

Does the Supermicro H14DSG-OD require a specific BIOS version or CPU stepping before it will recognise 12x64GB 2Rx4 RDIMMs?

The kit is validated for the H14DSG-OD motherboard; consult the board manual for the exact population order and any firmware revision needed for 768GB capacity.

Can I mix these 6400MHz CL52 2Rx4 modules with slower DDR5 RDIMMs already installed in the same H14DSG-OD system?

Mixing ranks, speeds or latencies is not supported; the board will down-clock all slots to the slowest common settings and may limit total capacity.

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