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Four green DDR5 RDIMM sticks without heat spreaders, 288-pin, 128GB kit

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 6400 CL52 2Rx4 ECC Registered RDIMM memory upgrade

SKU CH-KY2N-3GFPP

A 128GB kit of four 32GB DDR5 6400 CL52 ECC Registered RDIMMs built for the Supermicro X14SDW-36C-SP9F motherboard

  • 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 with four 32 GB modules for dense server memory
  • DDR5 6400 speed rated at PC5-51200 for high bandwidth
  • CL52 latency and 1.10 V operation matching server controller specs
  • 2Rx4 Registered ECC design corrects single-bit errors under full load
  • 288-pin RDIMM form factor verified for Supermicro X14SDW-36C-SP9F motherboard

Targeted server upgrade

This NEMIX RAM kit provides 128GB of DDR5 memory as four 32GB registered ECC RDIMMs. It is built for administrators upgrading a Supermicro X14SDW-36C-SP9F motherboard that requires 288-pin DDR5 6400 modules with a CL52 latency and 1.1V operation. The 2Rx4 registered design matches the board's memory controller expectations for full-capacity recognition.

Replaces limited or mismatched memory

The kit replaces slower, lower-capacity DIMMs or incompatible unbuffered modules that prevent the system from reaching its rated speed or total capacity. The jump is worth it when the server needs the full 128GB at the native PC5-51200 data rate and registered ECC stability for production workloads. Verified fitment ensures the population rules are satisfied without guesswork.

Suits Supermicro X14SDW-36C-SP9F builds

This memory suits IT teams populating that specific Supermicro board with a validated, matched quad-channel kit. It is not for desktop boards that accept only unbuffered UDIMMs, nor for systems requiring SODIMM form factors or non-ECC operation. Builders needing different capacities, speeds, or voltages should consult their motherboard manual for approved configurations.

How it compares

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

Price $4,535.99
Pricier than about 78% 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 $35.44 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 these 288-pin RDIMMs physically fit the Supermicro X14SDW-36C-SP9F motherboard?

Yes, the 288-pin registered DDR5 RDIMM form factor matches the slots on the Supermicro X14SDW-36C-SP9F motherboard; UDIMM or SODIMM modules would not fit.

What is the correct installation order for the four 32 GB modules on this board?

Consult the Supermicro X14SDW-36C-SP9F manual for the approved DIMM population sequence; the kit provides four identical 2Rx4 modules that must be installed in the order the manual specifies.

Do these registered ECC modules require any firmware updates or periodic maintenance after installation?

No firmware updates are needed for the memory itself; ensure the motherboard BIOS is current so it trains the DDR5 6400 CL52 timings correctly, then the modules run maintenance-free.

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