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Six bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB (6×128GB) DDR5-4800 CL40 1.1V 2Rx4 ECC Registered RDIMM 288-pin for Supermicro H14SSF

SKU CH-7K5B-1VSJM

Six 128 GB DDR5-4800 registered ECC modules deliver 768 GB at 1.1 V CL40 for the Supermicro H14SSF 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

Show 24 more
  • 768 GB total capacity from six 128 GB modules for dense server workloads
  • DDR5-4800 speed with CL40 latency delivers rated throughput for Supermicro H14SSF
  • Registered ECC architecture offloads the memory controller and corrects single-bit errors
  • 1 V operation matches the platform's voltage requirement for stable full-population runs
  • 288-pin RDIMM form factor fits the board's memory slots exactly

768GB DDR5-4800 ECC RDIMM Kit

This 768GB kit contains six 128GB DDR5-4800 Registered ECC RDIMMs built for the Supermicro H14SSF motherboard. Each module runs at 1.10V with CL40 latency in a 2Rx4 configuration. The 288-pin form factor matches the board's memory slots exactly. Registered buffering and ECC protect data integrity under full population.

Who This Suits and Who It Does Not

This kit suits administrators upgrading a Supermicro H14SSF to its maximum supported capacity with validated modules. It is not for systems that require unbuffered UDIMMs or SODIMMs. It is not for platforms that cannot address 768GB or that limit registered DIMM populations. Builders needing a different capacity or voltage should verify their motherboard manual first.

The Deciding Specification

The registered ECC RDIMM design with 2Rx4 organisation is the specification that determines compatibility. The Supermicro H14SSF memory controller expects this exact rank structure and buffering type to initialise all six slots at DDR5-4800. Using unbuffered or differently ranked modules will prevent the system from posting at the rated capacity and speed.

How it compares

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

Price $22,048.99
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 $28.71 per GB
Pricier than about 81% 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

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Questions about this item

Does the 768GB kit ship as six 128GB modules or do I need to buy any modules separately?

The kit includes six 128GB DDR5-4800 RDIMM modules in one package, so no additional modules are required to reach the full 768GB capacity.

Should I choose the 6×128GB 2Rx4 CL40 kit or a different capacity for my Supermicro H14SSF?

Select this 768GB kit when your board's memory population rules call for six 2Rx4 RDIMMs at DDR5-4800; other capacities or ranks may not populate correctly.

What does the DDR5-4800 PC5-38400 rating mean once the modules are installed in the server?

The modules run at 4800 MT/s with CL40 latency and 1.1V, delivering the exact speed, timing and voltage the H14SSF memory controller expects for full-capacity operation.

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