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Two green DDR5 RDIMM modules in a clear tray

NEMIX RAM

NEMIX RAM DDR5 6400 128GB 2x64GB 4Rx4 CL52 1.1V ECC RDIMM Supermicro X14SDW-72C-SP9F memory upgrade

SKU CH-27E7-R6132

128 GB DDR5 ECC registered server memory kit in two 64 GB modules running at 6400 MT/s with CL52 latency and 1.1 V operation, validated for the Supermicro X14SDW-72C-SP9F motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

Show 4 more
  • 128 GB kit lets the Supermicro X14SDW-72C-SP9F run fully populated at rated speed
  • Registered ECC architecture catches and corrects single-bit errors to prevent silent data corruption
  • DDR5 6400 CL52 at 1.1 V matches the board's memory-controller timing exactly
  • Two 64 GB 4Rx4 RDIMMs deliver high density without exceeding slot limits
  • Validated for the Supermicro X14SDW-72C-SP9F motherboard so the system recognises full capacity immediately

Supermicro X14SDW memory kit

This 128GB kit contains two 64GB DDR5 RDIMMs rated at 6400MHz with CL52 latency and 1.1V operation. The modules use a 4Rx4 registered ECC design that matches the Supermicro X14SDW-72C-SP9F motherboard's exact requirements.

Server builders needing registered ECC

Ideal for administrators populating the X14SDW-72C-SP9F with the precise rank, voltage, and timing the memory controller expects. Not suitable for systems that require UDIMM or SODIMM form factors, or for boards that do not support registered ECC DDR5 at this density.

Straightforward 288-pin installation

Align the notch with the slot key and press firmly until the retention clips engage; the registered buffer helps stability when all slots are populated. Common issues include ignoring the motherboard's population order or mixing ranks, which can prevent the system from recognising the full 128GB capacity.

How it compares

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

Price $3,851.99
Pricier than about 76% 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 $30.09 per GB
Pricier than about 86% 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 numberMR51200-944K2
Total capacity128 GB (2 × 64 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 rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 2 × 64 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Do I need a Supermicro X14SDW-72C-SP9F motherboard for this 128GB 2x64GB DDR5 6400 CL52 1.1V ECC RDIMM kit to work?

Yes, this kit is validated for the Supermicro X14SDW-72C-SP9F motherboard and its 288-pin Registered DDR5 6400 memory controller.

Can I mix these 4Rx4 Registered ECC modules with other DDR5 RDIMMs in the same server?

Mixing ranks, speeds or vendors is not recommended; the board's memory population rules expect identical 4Rx4 CL52 1.1V modules in each populated channel for full 6400 operation.

How do I confirm the kit runs at DDR5 6400 CL52 after installation?

Check the BIOS memory information or OS tools such as dmidecode; they should report 6400 MT/s, CL52 timings, 1.1V and 128GB total across both 64GB modules.

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