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Four green DDR5 RDIMM modules in a row, gold contacts visible, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 256GB 4x64GB 6400MHz CL52 2Rx4 ECC RDIMM Supermicro H14DST-FL

SKU CH-0C7W-1E8FW

256GB DDR5 registered ECC kit with four 64GB modules at 6400MHz, CL52 and 1.1V, validated for the Supermicro H14DST-FL motherboard

  • 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 matched 64 GB modules
  • DDR5 6400 speed with CL52 latency runs at rated frequency
  • 1 V registered ECC design reduces controller load and corrects errors
  • 2Rx4 288-pin RDIMM form factor fits Supermicro H14DST-FL slots exactly
  • Lifetime replacement warranty and US-based technical support included

Exact-Match Server Upgrade

This 256GB kit contains four 64GB DDR5 RDIMMs rated at 6400MHz CL52 and 1.1V. The registered ECC design with 2Rx4 organisation matches the Supermicro H14DST-FL memory controller so the system recognises full capacity at rated speed without manual tuning.

Thermals and Power

Modules operate at the standard 1.1V DDR5 voltage and run without heat spreaders, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, keeping power draw predictable when all four slots are populated.

What the Kit Changes

The four-module pack fills the board's validated population order in one step, eliminating mixed-rank uncertainty. ECC corrects single-bit errors on the fly while registered signalling lets every slot run at full 6400MHz throughput, preventing silent data corruption and unplanned reboots in production workloads.

How it compares

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

Price $7,635.99
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 $29.83 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 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

How do I install the four 64GB DDR5 RDIMMs in the Supermicro H14DST-FL and which slot order does the manual require?

Power down the server, open the chassis, and insert each 288-pin RDIMM into the slots listed first in the motherboard manual for a four-module population; the registered design means the board must see the exact rank and voltage combination to train at 6400 MT/s.

What maintenance or replacement will the 2Rx4 ECC RDIMM kit need over its service life?

The modules have no heat spreaders or moving parts, so routine maintenance is limited to keeping server airflow clean; ECC corrects single-bit errors automatically, and a module is only replaced if the system logs uncorrectable errors or a DIMM fails POST.

What is the first limit that appears when the 256GB kit runs sustained workloads at 6400 MT/s CL52?

The registered buffer and 1.10 V operation keep signal integrity stable, so the practical ceiling is the motherboard's maximum supported capacity and population rules rather than the memory's own timing or voltage headroom.

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