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Two green DDR5 RDIMM modules in a kit, no heat spreaders, 288-pin connectors visible

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 6400 CL52 2Rx4 ECC RDIMM memory upgrade for Supermicro H14SSL-NT

SKU CH-3W95-YNVHW

A 128 GB DDR5 registered ECC kit built to the Supermicro H14SSL-NT's exact rank, voltage and timing requirements

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 128 GB kit runs at DDR5-6400 CL52 1.1 V
  • Registered ECC 2Rx4 design prevents silent data corruption
  • Verified fit for Supermicro H14SSL-NT 288-pin RDIMM slots
  • Major OEM Samsung, Micron, Hynix chips ensure enterprise stability
  • Lifetime replacement warranty with US-based technical support

Exact-Match Server Upgrade

This 128GB kit delivers two 64GB DDR5 RDIMMs rated at 6400 speed with CL52 latency and 1.10V operation. Registered ECC architecture with 2Rx4 organisation ensures the Supermicro H14SSL-NT memory controller recognises full capacity at rated settings.

Suited for Fully Populated Channels

Ideal for administrators expanding a Supermicro H14SSL-NT platform to its maximum supported DIMM count with verified rank and voltage alignment. Not suitable for builds requiring UDIMM or SODIMM form factors, non-ECC operation, or lower-density single modules.

2Rx4 Registered ECC Organisation

The dual-rank 2Rx4 layout combined with registered buffering is the single specification that determines whether the board accepts all slots populated at 6400 transfer rates. Mismatched rank or buffer type will prevent the system from reaching rated capacity or speed.

How it compares

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

Price $4,101.99
Pricier than about 77% 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 $32.05 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 numberMR51200-924K2
Total capacity128 GB (2 × 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 items128 GB 2 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install the 2Rx4 RDIMM kit in the Supermicro H14SSL-NT and what population step is often missed?

Insert both 64 GB modules into the DIMM slots specified by the Supermicro H14SSL-NT manual for a two-DIMM configuration; the step most often missed is following the exact slot order required for registered ECC memory to initialise at DDR5-6400.

What maintenance or replacement will the 128 GB DDR5-6400 ECC RDIMM kit need over its service life?

No routine maintenance is required; if a module fails the lifetime replacement warranty covers a direct swap, and ECC continues to correct single-bit errors without user intervention.

What is the first limit reached when the 2Rx4 RDIMM kit runs sustained workloads at 6400 MT/s?

The registered buffer and ECC logic keep signal integrity at the rated 1.1 V and CL52, so the practical limit is the motherboard's maximum supported capacity and thermal envelope rather than the memory modules themselves.

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