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Twelve green DDR5 RDIMM modules in a row, black chips no heat spreader

NEMIX RAM

NEMIX RAM 768GB 12x64GB DDR5 4800 CL40 2Rx4 1.1V 288-Pin ECC RDIMM Kit Supermicro H13SSF

SKU CH-KWQB-JCZ4R

768 GB DDR5 ECC registered RDIMM kit with twelve 64 GB modules at 4800 MT/s, CL40, 1.1 V, validated for Supermicro H13SSF servers

  • 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
  • DDR5 4800 speed with CL40 latency for rated performance
  • Registered ECC design prevents silent data corruption
  • 10 V operation matches server memory controller requirements
  • 288-pin RDIMM form factor fits Supermicro H13SSF motherboard

768GB DDR5 ECC RDIMM kit for Supermicro H13SSF

This 768GB kit contains twelve 64GB DDR5 4800 registered ECC RDIMMs built to the exact rank, voltage and timing the Supermicro H13SSF memory controller expects. It targets administrators who need full-capacity population on that specific motherboard without manual tuning.

Sustained-load behaviour with registered ECC

Registered architecture buffers each command so all twelve slots operate at the rated 4800 MT/s when fully populated, while on-die ECC corrects single-bit errors in real time. The 1.10V operating point and CL40 latency remain stable across continuous workloads rather than throttling after a short burst.

Build and daily implications

Modules ship without heat spreaders, relying on server chassis airflow for cooling. The 288-pin RDIMM form factor fits only registered-DIMM slots, so the kit cannot be used in workstations or desktops that require unbuffered memory.

How it compares

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

Price $21,376.99
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 $27.83 per GB
Pricier than about 78% 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

Other versions of this model

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Questions about this item

How much power does the 1.1V DDR5 4800 kit draw when the Supermicro H13SSF runs fully populated all day?

Each module operates at 1.1V, the standard DDR5 voltage, so total power scales with the 12x64GB capacity your board's memory controller manages.

What must the Supermicro H13SSF motherboard already provide for this 288-pin RDIMM kit to function?

The board needs 12 DDR5 RDIMM slots wired for Registered ECC memory and a memory controller that accepts 2Rx4 modules at 4800 MT/s.

Will the 2Rx4 Registered ECC modules work in the same channels as any existing 1Rx4 or 2Rx8 RDIMMs I keep in the H13SSF?

Mixed-rank populations are governed by the motherboard's qualified-vendor list; the H13SSF manual specifies which slot combinations are validated.

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