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Two green DDR5 RDIMM sticks without heat spreaders, 288 pins each, 128 GB kit

NEMIX RAM

NEMIX RAM DDR5 4800 128GB 2x64GB ECC RDIMM CL40 2Rx4 1.1V memory upgrade for Supermicro X14SDV-20C-SP3F

SKU CH-RF6Q-E0EVJ

128 GB DDR5-4800 ECC registered DIMM kit (2 × 64 GB, 2Rx4, CL40, 1.1 V) validated for Supermicro X14SDV-20C-SP3F

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

  • 128 GB total capacity from two 64 GB modules for large-scale workloads
  • DDR5 4800 speed rated at PC5-38400 for high data throughput
  • CL40 latency at 1.10 V for efficient registered operation
  • ECC and registered design corrects single-bit errors and offloads the memory controller
  • 288-pin RDIMM form factor validated for Supermicro X14SDV-20C-SP3F motherboard

Exact-match DDR5 server kit

This 128 GB kit consists of two 64 GB DDR5-4800 registered ECC RDIMMs built to the precise rank, voltage and timing the Supermicro X14SDV-20C-SP3F expects. The modules arrive new and are ready for immediate installation in the 288-pin slots your board provides.

Capacity and registered headroom

128 GB across two dual-rank 2Rx4 modules lets the memory controller drive every populated slot at the rated 4800 MT/s without down-clocking. Registered buffering offloads the controller so full population remains stable, while on-die ECC corrects single-bit errors before they reach the operating system.

What the kit changes

Supplied as a matched pair, the two modules eliminate the guesswork of mixing loose DIMMs and ensure the board recognises the full 128 GB at CL40 1.1 V from first boot. No heat spreaders are included, so airflow in dense chassis is unrestricted.

How it compares

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

Price $3,439.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $26.87 per GB
Pricier than about 74% 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 numberMR38400-924K2
Total capacity128 GB (2 × 64 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 items128 GB 2 × 64 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 2Rx4 registered ECC DDR5 4800 modules work with my existing single-rank DDR5 DIMMs in the Supermicro X14SDV-20C-SP3F?

The board requires all installed DIMMs to be registered ECC RDIMMs; mixing registered and unbuffered modules is not supported. Population rules in the motherboard manual dictate which slots must be filled first for 2Rx4 kits.

How can I confirm the kit is running at DDR5 4800 CL40 1.1V after installation?

Enter the BIOS and verify the memory speed reads 4800 MT/s, CAS latency shows CL40, and voltage is set to 1.1 V. The POST memory test should report the full 128 GB capacity without errors.

Does the MR38400-924K2 kit include a heat spreader or any extra cables?

The package contains only the two 64 GB 288-pin DDR5 RDIMM modules. No heat spreader, cables, or additional accessories are included.

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