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Six green DDR5 RDIMM modules without heat spreaders in a clear tray

NEMIX RAM

NEMIX RAM 768GB 6x128GB DDR5 4800 CL40 1.1V 2Rx4 ECC RDIMM memory upgrade

SKU CH-K0A6-M31A2

Six 128 GB DDR5 4800 CL40 2Rx4 registered ECC RDIMMs totalling 768 GB, validated for the Supermicro H13SVW-NT-OS1 motherboard

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 6X128GB

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  • 768 GB total capacity from six 128 GB modules for maximum server density
  • DDR5 4800 speed with CL40 latency and 1.1 V operation for efficient performance
  • 2Rx4 Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 288-pin RDIMM form factor matches Supermicro H13SVW-NT-OS1 motherboard requirements
  • Lifetime replacement coverage and free US-based technical support included

768GB DDR5 4800 ECC RDIMM kit

This NEMIX RAM kit provides 768GB of DDR5 memory across six 128GB registered DIMMs. It operates at 4800 MT/s with CL40 latency and 1.1V voltage. The modules are built for Supermicro H13SVW-NT-OS1 motherboards that require 288-pin RDIMMs with ECC and registered buffering.

Suited for servers needing maximum registered ECC

The 2Rx4 organisation and registered design let the memory controller run all slots fully populated at the rated speed. ECC corrects single-bit errors on the fly to prevent silent data corruption. Builders using consumer boards, UDIMM-only platforms, or systems that cannot address 128GB per slot should look elsewhere.

128GB per module rank and voltage match the board

Each DIMM is a 2Rx4 device at 1.1V, the exact electrical profile the H13SVW-NT-OS1 memory controller expects. If your system manual lists a different rank structure, voltage, or maximum capacity per slot, the kit will not be recognised at full capacity or at its rated speed.

How it compares

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

Price $22,864.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $29.77 per GB
Pricier than about 85% 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 numberMR38400-724K6
Total capacity768 GB (6 × 128 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 6 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Does the 1.1V DDR5-4800 kit run cool and quiet under 24/7 server loads?

Registered ECC RDIMM modules offload the memory controller so every slot stays stable at full capacity; with no heat spreader, airflow through the chassis handles the 1.1V modules.

What motherboard slot and population rules must my Supermicro H13SVW-NT-OS1 already have for this 6x128GB kit?

The board needs six free 288-pin DDR5 RDIMM slots and must support 2Rx4 registered ECC at 4800 MT/s; consult the manual for the exact population order.

Can I mix these 128GB 2Rx4 CL40 RDIMMs with smaller DDR5 ECC modules already in the server?

Mixing ranks or capacities is not recommended; the memory controller expects identical 2Rx4 registered ECC DIMMs in each channel for full-speed operation.

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