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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 6400 256GB 4x64GB CL52 1.1V 2Rx4 ECC RDIMM Supermicro H14SSL-NT memory upgrade

SKU CH-CC7P-NRY8Q

256GB registered ECC DDR5 kit in four 64GB modules running at 6400MHz CL52, 1.1V, validated for Supermicro H14SSL-NT motherboards

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256 GB total capacity from four 64 GB modules for maximum server density
  • DDR5 6400 speed with CL52 latency delivers rated throughput on the Supermicro H14SSL-NT
  • Registered ECC RDIMM architecture corrects single-bit errors and supports full population
  • 1 V operation matches the platform's memory controller specification exactly
  • 288-pin 2Rx4 form factor fits the board's memory slots without adapters

Capacity & fit

This kit delivers 256GB across four 64GB DDR5 RDIMMs built to the exact specifications of the Supermicro H14SSL-NT motherboard. Registered ECC modules with 2Rx4 organisation and 1.1V operation match the board's memory controller requirements for full-speed recognition.

Sustained workload behaviour

Registered buffering offloads the memory controller so every slot remains stable when fully populated at the rated 6400 MT/s data rate. ECC corrects single-bit errors on the fly, preventing silent data corruption during long-running compute or database tasks.

Thermals and power

Modules operate at the standard DDR5 1.1V without heat spreaders, relying on server chassis airflow for cooling. The registered design reduces electrical load on the controller, keeping power draw predictable under continuous enterprise workloads.

How it compares

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

Price $7,902.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $30.87 per GB
Pricier than about 88% 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 numberMR51200-924K4
Total capacity256 GB (4 × 64 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 items256 GB 4 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does the 1.1V DDR5 6400 kit run cool enough for 24/7 server operation without extra airflow?

The modules operate at 1.1V with no heat spreader, so they rely on standard chassis airflow; registered ECC RDIMMs are designed for continuous duty in densely populated servers.

What motherboard slot and population rules must my Supermicro H14SSL-NT already follow to accept this 4x64GB kit?

The board needs four free 288-pin RDIMM slots and must support 2Rx4 registered ECC DIMMs at DDR5-6400; check the manual for the approved population order before installing.

Can I mix this 2Rx4 CL52 registered ECC kit with other DDR5 RDIMMs of different rank or latency on the same H14SSL-NT?

Mixing ranks or timings is not recommended; the memory controller expects identical 2Rx4 CL52 modules in each channel to run at the rated 6400 MT/s with ECC active.

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