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Two green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 6400 CL52 1.1V 2Rx8 ECC RDIMM Supermicro H14SSF memory upgrade

SKU CH-4SPQ-7R6F9

A 64 GB DDR5-6400 ECC registered RDIMM kit validated for the Supermicro H14SSF motherboard

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB total capacity from a matched 2 × 32 GB kit
  • DDR5-6400 speed with CL52 latency at 1.1 V
  • ECC and registered design prevent data errors under full load
  • 2Rx8 dual-rank organisation maximises density per DIMM slot
  • 288-pin RDIMM form factor built for Supermicro H14SSF motherboard

Exact-match DDR5-6400 upgrade for Supermicro H14SSF

This 64 GB kit provides two 32 GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1 V operation. Registered ECC architecture ensures the modules are recognised at full capacity by the server memory controller. It targets administrators who need validated, high-density memory for the H14SSF platform.

Thermals noise and power draw

The modules run at the standard DDR5 1.1 V without a heat spreader, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, contributing to stable power draw across all populated slots. Silent solid-state operation adds no audible noise to the rack environment.

Build quality and daily implications

Major OEM Samsung, Micron or Hynix DRAM chips underpin the 2Rx8 registered design, while 288-pin RDIMM keying prevents mis-installation in UDIMM or SODIMM slots. ECC corrects single-bit errors in real time, protecting production workloads from silent data corruption. The kit follows the board's specific population rules for reliable day-to-day operation.

How it compares

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

Price $2,309.99
Pricier than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $36.09 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 numberMR51200-328K2
Total capacity64 GB (2 × 32 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB 2 × 32 GB DDR5 6400 MHz PC5-51200 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install these 288-pin RDIMM modules in the Supermicro H14SSF and which population rule is often missed?

Power off the server, open the chassis, and insert each 32 GB module into the slots specified by the H14SSF manual for a two-DIMM configuration; the step most installers skip is verifying the exact slot order required for dual-channel operation before seating the modules.

What maintenance or replacement will this DDR5 ECC RDIMM kit need during its service life?

The modules have no heat spreaders or moving parts, so routine maintenance is limited to keeping the server's air filters clean and confirming ECC error logs remain at zero; replacement is only necessary if a module reports uncorrectable errors or the system fails to POST with both DIMMs installed.

What limit appears first when this 6400 CL52 1.1 V kit runs sustained workloads on the H14SSF?

The primary constraint is the JEDEC-defined 1.1 V operating voltage combined with CL52 latency at 6400 MT/s; the memory controller will not exceed this voltage, so sustained throughput is capped by the rated speed and timing rather than thermal headroom.

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