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Four green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM DDR5 6400 128GB 4x32GB CL52 1.1V 2Rx4 ECC RDIMM Supermicro X14SDW-42C-SP9F memory upgrade

SKU CH-W343-NDE33

128 GB DDR5 ECC RDIMM kit (four 32 GB modules) at 6400 MHz, CL52, 1.1 V, 2Rx4 registered for Supermicro X14SDW-42C-SP9F

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 4X32GB

  • 128GB total capacity across four 32GB modules
  • DDR5 6400 speed with CL52 latency at 1.10V
  • Registered ECC architecture prevents silent data corruption
  • 288-pin RDIMM form factor matches Supermicro X14SDW-42C-SP9F
  • Built with major OEM Samsung, Micron, Hynix chips

Capacity and configuration

This kit delivers 128 GB across four 32 GB DDR5 RDIMMs running at 6400 MT/s with CL52 timings at 1.1 V. The 2Rx4 registered ECC design keeps every slot stable when fully populated and corrects single-bit errors before they affect workloads.

Registered ECC headroom

Registered buffering offloads the memory controller so all four modules operate at rated speed without signal degradation. ECC protection stops silent data corruption, making the kit suitable for databases and virtualization where uptime matters more than raw bandwidth.

Supermicro X14SDW fit

The 288-pin RDIMM form factor matches the Supermicro X14SDW-42C-SP9F motherboard requirements exactly. No heat spreaders are included, so airflow clearance follows the board's native DIMM spacing. Verify the manual for approved population order before installation.

How it compares

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

Price $4,940.99
Pricier than about 80% 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 $38.60 per GB
Pricier than about 90% 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 numberMR51200-324K4
Total capacity128 GB (4 × 32 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 4 × 32 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will the 1.1V DDR5 6400 RDIMMs work alongside existing 1.2V DDR5 modules already installed in the Supermicro X14SDW-42C-SP9F?

The kit runs at 1.1V CL52; mixing voltages forces the memory controller to default to the higher voltage and looser timing, so full-speed operation across all slots is not guaranteed.

How can I confirm the 4x32GB kit is detected at DDR5 6400 with ECC active after installation?

Check the BIOS memory information screen — it should report 128GB total, 6400 MT/s, CL52, 1.1V, and ECC enabled for each of the four 288-pin RDIMMs.

Does the package include only the four 32GB RDIMMs or are any cables or brackets supplied?

The box contains the four 32GB DDR5 6400 CL52 1.1V 2Rx4 ECC Registered RDIMMs and nothing else; no cables, brackets or tools are included.

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