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Twelve green DDR5 RDIMM modules in a row, bare black chips, gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM 768GB 12x64GB DDR5 4800 CL40 1.1V ECC RDIMM Supermicro H13SST-G

SKU CH-H08Q-AFRFE

768 GB DDR5 server memory kit with 12 registered ECC modules at 4800 MHz CL40 for Supermicro H13SST-G

  • 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

Show 24 more
  • 768 GB total capacity from twelve 64 GB modules
  • DDR5 4800 speed with CL40 latency for rated performance
  • Registered ECC design corrects single-bit errors on the fly
  • 1 V operation matches the motherboard's memory controller spec
  • 288-pin RDIMM form factor fits the Supermicro H13SST-G exactly

Exact-match DDR5 kit for Supermicro H13SST-G

This 768GB kit contains twelve 64GB DDR5 4800 CL40 registered ECC RDIMMs built to the voltage and rank layout the H13SST-G memory controller expects. It is intended for administrators who need the full 768GB capacity on that specific motherboard.

Verify DIMM population rules in the board manual

The H13SST-G requires 288-pin RDIMMs and enforces a specific slot-filling order that varies with CPU count and BIOS revision. Check the manual for supported capacities per channel and the approved installation sequence before you open the package.

Registered design runs at 1.1V

The buffered architecture reduces electrical load on the memory controller when all twelve slots are populated, while ECC corrects single-bit errors on the fly. Modules operate at the standard 1.10V DDR5 voltage and rely on server chassis airflow for cooling.

How it compares

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

Price $19,444.99
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 $25.32 per GB
Pricier than about 70% 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

Does the 768GB kit ship as twelve individual 64GB modules or must extra DIMMs be purchased?

The package contains twelve 64GB DDR5 4800 CL40 1.1V ECC Registered RDIMM modules, delivering the full 768GB capacity in a single kit.

Should I pick the 12x64GB 2Rx4 configuration or a different capacity for the Supermicro H13SST-G?

Choose this 12x64GB 2Rx4 kit when the motherboard manual calls for fully populated registered ECC DIMMs at DDR5-4800; other capacities or ranks may not match the board's population rules.

Will the DDR5-4800 CL40 rating hold at 768GB in a live Supermicro H13SST-G server?

Yes — the kit is spec-matched to the H13SST-G memory controller so all twelve registered ECC modules run at the rated 4800 MT/s with CL40 latency when installed per the board's population guide.

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