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Four green DDR5 RDIMM modules in static bags

NEMIX RAM

NEMIX RAM DDR5 4800 128GB (4x32GB) CL40 1.1V 2Rx8 ECC RDIMM Supermicro X14SDV-20C-SP3F memory upgrade

SKU CH-HBYG-5082C

128 GB DDR5 server kit with four 32 GB ECC registered DIMMs running at 4800 MT/s, CL40, 1.1 V, validated for the Supermicro X14SDV-20C-SP3F motherboard

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 4X32GB

  • 128 GB total capacity from four 32 GB modules for large server workloads
  • DDR5 4800 speed delivers high bandwidth for demanding applications
  • Registered ECC design corrects single-bit errors to protect data integrity
  • 1 V operation reduces power draw in fully populated systems
  • Exact fit for Supermicro X14SDV-20C-SP3F motherboard with 288-pin RDIMM form factor

Purpose-built server upgrade

This 128 GB kit contains four 32 GB DDR5 ECC Registered DIMMs tuned to 4800 MT/s at CL40 and 1.1 V. It is designed for administrators expanding a Supermicro X14SDV-20C-SP3F platform that requires registered memory with on-die error correction.

Kit composition and stability

The package delivers four identical modules so every slot can be populated with matching rank, voltage and timing. Registered buffering reduces electrical load on the memory controller while ECC corrects single-bit errors before they affect running workloads.

Installation and common issues

Modules key into the board's 288-pin RDIMM slots in the order specified by the Supermicro manual; deviating from that sequence can prevent the system from recognising the full capacity. Verify the approved population rules before starting the upgrade.

How it compares

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

Price $3,604.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.16 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 numberMR38400-328K4
Total capacity128 GB (4 × 32 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 4 × 32 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 1.10 V DDR5 modules need a voltage adjustment later?

The kit runs at the standard 1.10 V; no voltage change is required for the Supermicro X14SDV-20C-SP3F motherboard.

What limits sustained throughput on the 4800 MHz CL40 RDIMMs?

The CAS latency of CL40 at DDR5-4800 sets the timing ceiling during continuous workloads.

How much heat do the four 32 GB sticks produce under all-day load?

The modules have no heat spreader and operate at 1.10 V, so thermal output stays low in the server chassis airflow.

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