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Two green DDR5 RDIMM modules with black chips and gold contacts, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 4800 ECC Registered RDIMM 128GB 2x64GB CL40 1.1V 288-pin Supermicro H13DSG-O-CPU memory upgrade

SKU CH-Z08H-DMB7F

128 GB DDR5 ECC registered RDIMM kit — two 64 GB modules at 4800 MT/s, CL40, 1.1 V, validated for Supermicro H13DSG-O-CPU servers

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

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  • 128 GB total capacity with two 64 GB modules for maximum density
  • DDR5-4800 speed at CL40 latency for high-throughput workloads
  • Registered ECC design corrects single-bit errors to prevent data corruption
  • 10 V operation lowers power draw under full load
  • Validated for Supermicro H13DSG-O-CPU motherboard with 288-pin RDIMM slots

Supermicro H13DSG-O-CPU DDR5 upgrade

This 128 GB kit delivers two 64 GB DDR5-4800 registered ECC modules built to the exact rank, voltage and timing the Supermicro H13DSG-O-CPU memory controller expects. It targets administrators who need to populate every slot at full capacity without compatibility guesswork.

Capacity and headroom

Two dual-rank 64 GB RDIMMs provide 128 GB of registered ECC memory running at PC5-38400 with CL40 latency at 1.1 V. Registered buffering lets the board run fully populated at rated speed, while ECC corrects single-bit errors before they reach production workloads. The kit stops at 128 GB; systems requiring more memory per channel or higher frequencies will need a different solution.

Build and connectors

Modules use the 288-pin RDIMM form factor with major OEM DRAM and no heat spreader, relying on server chassis airflow for cooling. The registered design reduces electrical load on the memory controller, enabling stable operation across all populated slots. Buyers without a Supermicro H13DSG-O-CPU board or those needing UDIMM or SODIMM modules cannot use this kit.

How it compares

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

Price $3,646.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.49 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 numberMR38400-924K2
Total capacity128 GB (2 × 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 items128 GB 2 × 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

Will the 2Rx4 4800MHz registered ECC modules run alongside any existing DDR5 RDIMMs in the Supermicro H13DSG-O-CPU?

Yes, as long as the installed DIMMs are also DDR5 4800 registered ECC at 1.1V, the memory controller will train all slots at the rated speed; mixing ranks or speeds forces the slowest common setting.

How can I confirm the kit is recognised at 128GB and DDR5-4800 after installation?

Enter the BIOS or UEFI and check the memory information screen — it should show 128GB total, 4800MT/s data rate, CL40 latency and ECC enabled for each of the two 64GB modules.

Does the 2x64GB kit include heat spreaders or any cables, or must they be purchased separately?

The package contains only the two 288-pin RDIMM modules; no heat spreaders, cables or additional accessories are included.

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