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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4×64GB) DDR5 6400 CL52 1.1V 4Rx4 ECC RDIMM Supermicro X14SDW-36CE-SP9F memory upgrade

SKU CH-RPHD-W5THT

256 GB DDR5 ECC registered kit (4 × 64 GB) running at 6400 MHz CL52 1.1 V, validated for Supermicro X14SDW-36CE-SP9F

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

  • 256 GB total capacity in a 4 × 64 GB kit enables maximum memory density
  • DDR5 6400 speed with CL52 latency delivers rated throughput for the platform
  • 1 V operation matches the motherboard's voltage requirement for stable full-population use
  • Registered ECC design with 4Rx4 rank corrects single-bit errors and offloads the memory controller
  • 288-pin RDIMM form factor fits the Supermicro X14SDW-36CE-SP9F motherboard exactly

Exact-match 256 GB DDR5 server kit

This 256 GB kit contains four 64 GB DDR5-6400 registered ECC RDIMMs built to the precise rank, voltage and timing the Supermicro X14SDW-36CE-SP9F memory controller expects so the system recognises the full capacity at rated speed. It targets administrators who need maximum supported memory on this specific platform without compatibility guesswork.

288-pin registered ECC build quality

Each module uses a 288-pin RDIMM form factor with 4Rx4 organisation and 1.1 V operation, exactly matching the board's electrical and mechanical requirements. Registered buffering offloads the memory controller so every slot runs fully populated while on-die ECC corrects single-bit errors before they reach production workloads.

Upgrade from partial or lower-capacity kits

Replacing smaller or mixed-capacity DIMM sets with this matched 4×64 GB kit removes population-order restrictions and unlocks the full 256 GB ceiling the motherboard supports. The jump is worth it when workloads demand maximum registered ECC capacity at DDR5-6400 speed and the board manual confirms this exact configuration.

How it compares

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

Price $8,061.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.49 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-944K4
Total capacity256 GB (4 × 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 items256 GB 4 × 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

What speed does the DDR5 6400 interface run at on the Supermicro X14SDW-36CE-SP9F?

The kit operates at DDR5 6400 (PC5-51200) with CL52 latency at 1.1V, matching the memory controller's rated speed for full-capacity recognition.

Which physical slot and form factor do these modules need on the Supermicro X14SDW-36CE-SP9F?

They require 288-pin DDR5 RDIMM slots; the board uses registered DIMMs, not UDIMM or SODIMM, and the kit provides four 64GB modules for full population.

What is the correct installation order for the four 64GB RDIMMs on this motherboard?

Consult the Supermicro X14SDW-36CE-SP9F manual for the approved DIMM population sequence; registered ECC modules must be installed in the specific slot order the firmware expects.

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