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Four green DDR5 RDIMM modules with black chips, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM DDR5 512GB (4x128GB) 4800MHz CL40 ECC Registered RDIMM Supermicro H14SSL-N memory upgrade

SKU CH-7MZX-FM6VS

A 512 GB registered ECC DDR5 kit built for the Supermicro H14SSL-N motherboard

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

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  • 512GB total capacity from four 128GB modules for maximum server density
  • DDR5 4800 speed matches the Supermicro H14SSL-N controller for rated performance
  • Registered ECC design corrects single-bit errors and offloads the memory controller
  • 1V operation at CL40 latency meets the board's exact voltage and timing requirements
  • 288-pin RDIMM form factor fits the H14SSL-N slots without adapters or mismatches

Capacity and purpose

This 512 GB kit contains four 128 GB DDR5 registered ECC RDIMMs built for the Supermicro H14SSL-N motherboard. It targets server administrators who need maximum supported memory in a single validated package.

Fit and integration

Each module uses the 288-pin RDIMM form factor with 2Rx4 organisation and runs at 1.1 V, matching the board's electrical and population rules. The registered buffer lets every slot run fully populated while ECC corrects single-bit errors before they affect workloads.

Sustained operation

Rated at DDR5-4800 with CL40 timings, the kit maintains its specified speed and stability under continuous multi-threaded load. Registered architecture reduces electrical stress on the memory controller during extended full-capacity operation.

How it compares

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

Price $14,352.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $28.03 per GB
Pricier than about 79% 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 numberMR38400-724K4
Total capacity512 GB (4 × 128 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 items512 GB 4 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 4800 MHz DDR5-4800 speed hold steady across all four slots under sustained load?

The kit runs at the rated 4800 MHz PC5-38400 speed with CL40 latency when fully populated; registered architecture keeps every slot stable at that frequency.

How much heat and power should I expect from the 1.1 V 2Rx4 modules running 24/7?

Each 128 GB module operates at 1.1 V without a heat spreader; registered buffering reduces controller load, keeping thermals and draw low in continuous server operation.

Does my Supermicro H14SSL-N need a specific BIOS revision or CPU to recognise the full 512 GB kit?

The modules are validated for the H14SSL-N motherboard; consult the board manual for approved population order and any firmware requirements before installing all four DIMMs.

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