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Four green DDR5 RDIMM modules in a clear tray

NEMIX RAM

NEMIX RAM DDR5 6400 128GB 4x32GB CL52 2Rx4 ECC Registered RDIMM Supermicro X14SDW-40C-SP9F

SKU CH-80MV-Q06XT

128 GB kit of four 32 GB DDR5-6400 registered ECC RDIMMs at CL52 and 1.1 V for Supermicro X14SDW-40C-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

  • 128 GB total capacity from four 32 GB modules
  • DDR5-6400 speed with CL52 latency at 1.1 V
  • Registered ECC RDIMM architecture for data integrity
  • 2Rx4 dual-rank organisation enables full population
  • Verified fit for Supermicro X14SDW-40C-SP9F motherboard

Exact-match DDR5 kit for Supermicro X14SDW

This 128GB kit contains four 32GB DDR5 6400 RDIMMs built to the exact rank, voltage and timing the Supermicro X14SDW-40C-SP9F memory controller expects. Registered ECC architecture offloads the controller so every slot runs fully populated at rated speed while ECC corrects single-bit errors on the fly. The modules install in the 288-pin RDIMM slots this board requires.

DDR5 6400 speed and 1.1V voltage ceiling

DDR5 6400 (PC5-51200) sets the maximum data rate and the 1.1V operating voltage the memory controller supports; faster modules will down-clock and higher-voltage modules will not be recognised. Registered buffering allows full four-slot population without signal degradation, but the board's population rules still dictate which slots must be filled first.

2Rx4 registered ECC RDIMM form factor

The 2Rx4 registered ECC RDIMM layout is the single specification that determines whether this kit will be recognised at full capacity and run at DDR5 6400 on the target motherboard; a UDIMM, SODIMM or different rank configuration will not work.

How it compares

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

Price $4,653.99
Pricier than about 79% 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 $36.36 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

Other versions of this model

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Questions about this item

Should I choose this 128GB 4x32GB kit or a different capacity for my Supermicro X14SDW-40C-SP9F?

This 128GB kit uses four 32GB DDR5 6400 RDIMMs. The board has 14 DDR5 slots; check its manual for the approved population order and maximum capacity per slot before deciding.

Will the DDR5 6400 speed run at 6400 MT/s once installed in the Supermicro X14SDW-40C-SP9F?

The modules are rated DDR5 6400 (PC5-51200) at 1.1V CL52. The X14SDW-40C-SP9F memory controller must support that data rate; if it caps lower, the DIMMs will downclock to the highest speed the board allows.

Does the 288-pin Registered ECC RDIMM interface limit how many modules I can install?

The 288-pin RDIMM form factor is required by the X14SDW-40C-SP9F. Registered architecture lets the board run all 14 slots fully populated at rated capacity, while ECC corrects single-bit errors on the fly.

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