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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM DDR5 768GB 12x64GB RDIMM ECC 4800 CL40 Supermicro H14DSG-O-CPU

SKU CH-B8G8-J3JCW

A 768 GB DDR5 registered ECC kit of twelve 64 GB modules at 4800 MHz CL40 1.1 V 288-pin RDIMM validated for Supermicro H14DSG-O-CPU

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 12X64GB

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  • 768 GB total capacity from twelve 64 GB modules for maximum server density
  • DDR5 4800 speed with CL40 latency delivers rated throughput out of the box
  • Registered ECC architecture offloads the controller and corrects single-bit errors on the fly
  • 10 V operation matches the motherboard's voltage requirement exactly
  • Verified fitment for Supermicro H14DSG-O-CPU with 288-pin RDIMM form factor

Capacity and purpose

This 768GB kit contains twelve 64GB DDR5 RDIMM modules built for the Supermicro H14DSG-O-CPU motherboard. It targets server administrators who need maximum registered ECC capacity in a single validated package.

Registered ECC architecture

The modules use a 2Rx4 registered design with on-die ECC at 1.10V, matching the board's memory controller requirements for full-slot population. Only this exact rank, voltage and timing combination guarantees recognition at the rated 4800 speed.

Sustained workload behaviour

Registered buffering offloads the memory controller so all twelve slots operate at full capacity continuously, while ECC corrects single-bit errors in real time to prevent silent data corruption during extended production runs.

How it compares

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

Price $19,072.99
Pricier than about 91% 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 $24.83 per GB
Pricier than about 69% 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 numberMR38400-924K12
Total capacity768 GB (12 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
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 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 4800 MT/s DDR5 speed actually run at that rate on the Supermicro H14DSG-O-CPU?

The kit is spec-matched to the motherboard's memory controller, so the 4800 MT/s rating is recognised and maintained across all twelve slots when populated per the board's population rules.

Does the 288-pin RDIMM registered interface limit how many modules I can install?

Registered buffering offloads the memory controller, allowing all twelve 64 GB modules to run at full capacity and rated speed without signal degradation.

What physical clearance does the 12-module kit need inside a Supermicro H14DSG-O-CPU chassis?

Each module is a standard 288-pin RDIMM without a heat spreader, so it fits the board's DIMM slots directly; verify the chassis air-baffle height against the bare PCB profile before installation.

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