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Green circuit board DDR5 RDIMM module with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM 128GB DDR5 6400 4Rx4 ECC RDIMM Supermicro X14SDW-36C-SP9F memory upgrade

SKU CH-QMY1-B56MS

128 GB DDR5 6400 RDIMM with ECC and registered buffering, 4Rx4 CL52 at 1.1 V, built for the Supermicro X14SDW-36C-SP9F motherboard

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

Size 128GB

  • 128 GB capacity fits large workloads
  • DDR5 6400 speed matches rated board frequency
  • 4Rx4 registered ECC corrects single-bit errors on the fly
  • 1 V operation meets exact voltage spec
  • 288-pin RDIMM form factor fits Supermicro X14SDW-36C-SP9F motherboard

System-Specific DDR5 Upgrade

This 128GB DDR5 6400 RDIMM is built for the Supermicro X14SDW-36C-SP9F motherboard. It delivers registered ECC memory at 1.1V with CL52 timing in a 288-pin form factor. The module uses major OEM chips and matches the board's exact voltage, rank, and speed requirements.

Suited For Full-Population Servers

Ideal for administrators populating every DIMM slot on the X14SDW-36C-SP9F with maximum-capacity registered ECC modules. The registered design reduces electrical load on the memory controller, while ECC corrects single-bit errors in production environments. Builders needing unbuffered UDIMMs, SODIMMs, or non-ECC memory should select a different product type.

4Rx4 Rank Determines Compatibility

The 4Rx4 organization is the single specification that decides whether this module works in your configuration. The X14SDW-36C-SP9F memory controller expects this exact rank structure per slot to recognise full capacity and operate at the rated DDR5 6400 speed. Consult your motherboard manual for supported population rules before installing.

How it compares

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

Price $4,156.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.48 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 numberMR51200-744K1
Total capacity128 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 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

How do I install the 128GB DDR5 6400 4Rx4 ECC RDIMM in my Supermicro X14SDW-36C-SP9F and what step is often missed?

Power down, open the chassis, and insert the 288-pin RDIMM into the slot specified by the motherboard manual for your CPU and channel configuration. The step most people miss is checking the manual's DIMM population order before seating the module.

What maintenance or replacement will this 128GB DDR5 6400 4Rx4 ECC RDIMM need over its service life?

The module has no heat spreader and no moving parts, so it requires no routine maintenance. If a correctable ECC error count rises or the system logs uncorrectable errors, replace the affected RDIMM under the lifetime replacement coverage.

What limit appears first when the 128GB DDR5 6400 4Rx4 ECC RDIMM runs sustained workloads on the Supermicro X14SDW-36C-SP9F?

The registered buffer and 1.10V operation keep electrical loading low, so the first limit is typically the motherboard's maximum supported capacity per channel or total system memory ceiling defined in its specification.

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