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Twelve bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM MR38400-924K12 768GB 12x64GB DDR5 4800 CL40 ECC RDIMM H14SST-G memory upgrade

SKU CH-QBC0-4VJK0

768 GB DDR5-4800 ECC registered RDIMM kit of twelve 64 GB modules at CL40 and 1.1 V, validated for the Supermicro H14SST-G motherboard

  • 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 30 more
  • 768 GB total capacity from twelve 64 GB modules
  • DDR5 4800 speed with CL40 latency at 1.1 V
  • Registered ECC RDIMM design prevents data errors under load
  • 2Rx4 dual-rank organisation enables full 12-slot population
  • Exact-match kit validated for Supermicro H14SST-G motherboard

Exact-match DDR5 kit

This 768GB kit contains twelve 64GB DDR5 4800 CL40 ECC Registered RDIMMs built to the precise rank, voltage, and timing the Supermicro H14SST-G memory controller expects. The modules operate at 1.1V and use the 288-pin RDIMM form factor required by this board.

Suited for full-population server builds

Administrators expanding a Supermicro H14SST-G to its maximum supported capacity with registered ECC memory will find the spec-matched population order and 2Rx4 organisation verified for stability. Systems that require UDIMMs, SODIMMs, non-ECC modules, or a different DDR generation cannot use this kit.

Build integration notes

The registered architecture offloads the memory controller so every slot runs fully populated at rated speed while ECC corrects single-bit errors on the fly. Installation follows the motherboard manual's approved DIMM population sequence; no heat spreaders are present, so airflow clearance matches standard RDIMM profiles.

How it compares

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

Price $20,071.99
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 $26.14 per GB
Pricier than about 72% 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

Does this 12-module DDR5 4800 kit require a Supermicro H14SST-G motherboard with 12 DDR5 RDIMM slots to install all 768GB?

Yes, the kit contains 12 registered DDR5 DIMMs and is verified for the Supermicro H14SST-G, which must provide 12 DDR5 288-pin RDIMM slots to populate the full 768GB capacity.

Will these 2Rx4 DDR5 4800 registered ECC modules run at their rated speed when populated across all 12 slots on the H14SST-G?

The kit is spec-matched to the H14SST-G memory population rules, so the memory controller recognises the 2Rx4 organisation, 1.1V voltage and CL40 timing at DDR5 4800 across every populated slot.

How can I confirm the 768GB kit is detected at DDR5 4800 with ECC active after installation?

Check the BIOS memory information screen or operating system firmware tables for 768GB total capacity, DDR5 4800 speed, CL40 latency and ECC status reported as enabled.

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