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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM DDR5 4800 768GB 12x64GB CL40 1.1V 2Rx4 RDIMM ECC memory upgrade

SKU CH-WWQK-VB8KP

A 768 GB DDR5 registered ECC kit of twelve 64 GB modules running at 4800 MT/s with CL40 latency and 1.1 V, validated for Supermicro H13DSG-O-CPU-D motherboards

  • 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 12 matched 64 GB modules
  • DDR5 4800 speed with CL40 latency at 1.1 V
  • Registered ECC design corrects single-bit errors and supports full-slot population
  • 288-pin RDIMM form factor built for Supermicro H13DSG-O-CPU-D motherboard
  • 2Rx4 dual-rank organisation maximises density per channel

Purpose-built server memory kit

This 768GB kit contains twelve 64GB DDR5 RDIMM modules rated at 4800MHz with CL40 latency and 1.1V operation. It is designed for the Supermicro H13DSG-O-CPU-D motherboard where registered ECC memory is required for full-capacity operation.

Straightforward installation with one critical check

The 288-pin RDIMM form factor slots directly into the board, but the registered architecture and 2Rx4 rank layout mean population order matters. Consult the motherboard manual for the approved slot sequence before installing all twelve modules to avoid a no-post condition.

Registered ECC with 2Rx4 rank structure

The combination of registered buffering, ECC error correction and dual-rank x4 organisation is what lets the memory controller address the full 768GB at the rated 4800MHz speed. Systems that require unbuffered UDIMMs or a different rank configuration will not recognise this kit.

How it compares

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

Price $21,789.99
Pricier than about 92% 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 $28.37 per GB
Pricier than about 80% 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

How do I confirm the kit is running at DDR5-4800 CL40 with ECC active after installation?

Enter the BIOS or use a tool like dmidecode to verify each of the 12 modules shows 4800 MT/s, CL40 timing, 1.1 V, 2Rx4 registered ECC and the full 768 GB total.

What ships in the box and do I need extra cables or brackets?

The package contains the 12 x 64 GB DDR5 RDIMM modules only; no cables, brackets or heat spreaders are included or required.

Should I choose this 12 x 64 GB kit or a different capacity for the Supermicro H13DSG-O-CPU-D?

Select this 768 GB kit when your workload needs the maximum supported capacity and the board's population guide calls for 12 identical 64 GB 2Rx4 registered ECC DIMMs.

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