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Green printed circuit board with black memory chips in a 288-pin DDR5 RDIMM form factor

NEMIX RAM

NEMIX RAM 64GB DDR5 4800MHz CL40 2Rx4 1.1V 288-Pin ECC Registered RDIMM memory upgrade for Supermicro H14SST-G

SKU CH-GSFX-399ST

64 GB DDR5-4800 2Rx4 Registered ECC RDIMM at 1.1 V CL40, validated for the Supermicro H14SST-G motherboard

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 64GB

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  • 64 GB capacity lets you fully populate the Supermicro H14SST-G
  • DDR5 4800 speed with CL40 timing matches the board's rated specification
  • 2Rx4 registered ECC design offloads the memory controller for stable full-slot operation
  • 1 V standard voltage ensures correct signalling without manual tuning
  • 288-pin RDIMM form factor fits the motherboard's DIMM slots exactly

Exact DDR5 Server Upgrade

This 64 GB DDR5 RDIMM is built for the Supermicro H14SST-G motherboard. It delivers registered ECC memory in the 288-pin form factor that the board requires. The module arrives new and ready for installation in compatible server configurations.

Registered ECC With CL40 Timing

The stick runs at DDR5 4800 (PC5 38400) with a CAS latency of 40 at 1.10 V. Its 2Rx4 rank structure and registered buffer match the memory controller expectations for full capacity recognition and rated speed operation. Major OEM chips from Samsung, Micron or Hynix provide the underlying components.

Suited For Single Slot Population

Administrators expanding a supported Supermicro H14SST-G system with one 64 GB module will find this kit matches the documented population rules. Builders who need UDIMM or SODIMM form factors, non ECC memory, or different voltage and timing specifications should look at other memory types.

How it compares

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

Price $1,516.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $23.70 per GB
Pricier than about 68% 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 numberMR38400-924K1
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 4800MHz speed run at its rated frequency once installed in the Supermicro H14SST-G?

Yes, the module is spec-matched to the motherboard's memory controller so it is recognised at full capacity and operates at the DDR5 4800 (PC5 38400) data rate.

What does the 288-pin RDIMM interface mean for compatibility with the Supermicro H14SST-G?

The board requires a 288-pin Registered DIMM; this module matches that exact form factor and will not fit UDIMM or SODIMM slots.

Does the 2Rx4 rank configuration affect how I populate the DIMM slots on the H14SST-G?

The dual-rank 2Rx4 layout follows the board's population rules; consult the motherboard manual for the approved slot order when installing multiple modules.

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