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Six green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 6400 768GB (6×128GB) ECC RDIMM CL52 1.1V Supermicro H14SSL-N memory upgrade

SKU CH-134A-ZAT9Q

A 768 GB DDR5 ECC RDIMM kit of six 128 GB modules at 6400 MHz CL52 1.1 V, registered for full-capacity stability on Supermicro H14SSL-N motherboards

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 768GB 6X128GB

Show 24 more
  • 768 GB total capacity from six 128 GB modules for memory-intensive workloads
  • DDR5-6400 speed with CL52 latency delivers rated throughput for Supermicro H14SSL-N
  • Registered ECC RDIMM architecture corrects single-bit errors and supports full population
  • 1 V operation matches the platform's memory controller specification exactly
  • Major OEM Samsung, Micron, or Hynix chips ensure enterprise-grade component quality

768GB DDR5-6400 ECC RDIMM kit

This 768GB kit contains six 128GB DDR5-6400 registered ECC RDIMMs built for the Supermicro H14SSL-N motherboard. The modules run at PC5-51200 with CL52 latency and 1.10V voltage. Registered buffering and on-die ECC protect data integrity across all populated slots. The 288-pin form factor matches the board's memory sockets exactly.

Not for non-ECC or UDIMM systems

Buyers who need unbuffered UDIMMs or non-ECC memory for workstations cannot use this kit. The registered RDIMM design and ECC function require a server chipset that supports both features. Systems limited to lower capacities or different pin layouts will not recognise these modules. Always verify the motherboard manual for approved population rules.

Registered ECC with 2Rx4 organisation

Each module uses a 2Rx4 rank structure that the memory controller expects for full-capacity operation. This organisation enables the 768GB total across six slots at the rated 6400MT/s speed. A different rank configuration would change population limits and prevent the kit from running at its specified frequency.

How it compares

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

Price $26,301.99
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 $34.25 per GB
Pricier than about 90% 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 numberMR51200-724K6
Total capacity768 GB (6 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
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 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Does the Supermicro H14SSL-N motherboard need to support DDR5 6400 RDIMMs for this kit to work?

Yes, the board must accept 288-pin DDR5 RDIMMs running at 6400 MT/s with 1.1V operation and registered ECC; otherwise the modules will not be recognised or will run at a lower speed.

Can I mix these 2Rx4 registered ECC modules with other registered ECC DIMMs already installed in the H14SSL-N?

Mixing is possible only if the existing DIMMs are also DDR5 RDIMMs with the same 2Rx4 organisation, 1.1V voltage and CL52 timing; the motherboard manual defines the approved population order for mixed ranks.

How do I confirm the full 768 GB is running at the rated 6400 MT/s after installation?

Enter the BIOS or use a tool such as dmidecode to verify each of the six slots shows 128 GB, DDR5-6400, 1.1V, registered ECC and CL52 latency with no errors reported.

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