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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM DDR5 4800 768GB 12x64GB ECC RDIMM Supermicro H14DSH memory upgrade

SKU CH-KK67-Q3RAQ

A 768GB DDR5-4800 registered ECC kit of twelve 64GB RDIMMs validated for the Supermicro H14DSH 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

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  • 768 GB total capacity from twelve 64 GB modules for large-scale workloads
  • DDR5 4800 speed with CL40 latency delivers rated throughput
  • 2Rx4 registered ECC design corrects single-bit errors on the fly
  • 10 V operation matches the motherboard's memory-controller specification
  • 288-pin RDIMM form factor fits the Supermicro H14DSH exactly

768GB DDR5-4800 ECC RDIMM kit

This 12-module kit delivers 768GB of DDR5-4800 registered ECC memory built for the Supermicro H14DSH motherboard. Each 64GB module uses a 2Rx4 organisation, runs at 1.1V and carries CL40 timing. The registered design lets the memory controller address every slot at full population without signal degradation.

DDR5-4800 registered ECC limits

The DDR5-4800 standard caps this kit at PC5-38400 bandwidth and CL40 latency, so workloads that scale beyond that throughput will hit the interface ceiling. Registered buffering and ECC add a small command-cycle overhead compared with unbuffered non-ECC modules, which is the trade-off for full-capacity stability across all 12 slots.

12-module RDIMM installation

Installing 12 identical 288-pin RDIMMs means following the H14DSH population sequence exactly; skipping a prescribed slot or mixing ranks prevents the board from training at the rated 4800 speed. The modules have no heat spreaders, so airflow across the DIMM rows must be sufficient for sustained 1.1V operation.

How it compares

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

Price $18,345.99
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 $23.89 per GB
Pricier than about 69% 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

Should I choose the 12x64GB kit or a different capacity for my Supermicro H14DSH?

This 768GB kit provides 12 modules of 64GB each, filling all available slots for maximum capacity on the H14DSH. Verify your motherboard manual for supported population rules before installing.

What does the DDR5 4800 speed mean for real-world server performance?

The modules run at 4800MHz (PC5-38400) with CL40 latency at 1.1V, delivering the rated bandwidth and timing the H14DSH memory controller expects for stable, full-capacity operation.

How does the 288-pin RDIMM interface and ECC registration affect my system?

The 288-pin Registered DIMM format with 2Rx4 organization and ECC offloads the memory controller, enables full-slot population at 768GB, and corrects single-bit errors to prevent data corruption.

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