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Six green DDR5 RDIMM modules with black chips no heat spreaders

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 ECC RDIMM Supermicro H13SST-GC

SKU CH-4EK7-WFM3P

A 768 GB DDR5 kit of six 128 GB registered ECC RDIMMs at 4800 MT/s CL40, 1.1 V, validated for the Supermicro H13SST-GC motherboard

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 6X128GB

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  • 768 GB total capacity from six 128 GB modules for maximum server density
  • DDR5 4800 speed with CL40 timing matches the board's rated frequency exactly
  • Registered ECC architecture corrects single-bit errors and buffers every slot fully populated
  • 10 V operation at 2Rx4 rank aligns with the memory controller's native spec
  • 288-pin RDIMM form factor verified for Supermicro H13SST-GC motherboard compatibility

Exact-Match Server Kit

This 768 GB kit contains six 128 GB DDR5 4800 RDIMMs built for the Supermicro H13SST-GC motherboard. Registered ECC modules with 2Rx4 organisation and CL40 timing deliver the precise rank, voltage and latency the platform expects. The memory controller recognises every slot at full capacity without manual tuning.

Sustained Load Stability

Registered architecture buffers each command so the memory controller stays stable when all six slots run fully populated at 4800 MT/s. ECC corrects single-bit errors on the fly, preventing silent data corruption during long compute runs. Operation at 1.1 V keeps power draw predictable across extended workloads.

Installation Notes

Align the 288-pin RDIMM key with the motherboard slot and press evenly until the latches click. Follow the board manual for the approved population order; skipping a required sequence will leave capacity unrecognised. No heat spreader is fitted, so verify chassis airflow before deploying in dense configurations.

How it compares

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

Price $22,337.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $29.09 per GB
Pricier than about 82% 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 numberMR38400-724K6
Total capacity768 GB (6 × 128 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 6 × 128 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 768GB kit draw when the server runs continuously?

Each 128GB module operates at 1.10V; total system power depends on the Supermicro H13SST-GC memory controller and workload, not the kit alone.

What motherboard slot type must the Supermicro H13SST-GC provide for these 288-pin RDIMMs?

The board needs six DDR5 288-pin RDIMM slots that support registered ECC memory population rules.

Will the 2Rx4 registered ECC DDR5 modules work in the same channels as other DDR5 RDIMMs already installed in the H13SST-GC?

Mixing ranks or capacities can change population rules; consult the motherboard manual for approved DIMM configurations before adding this kit.

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