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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 256GB 4x64GB DDR5 6400 CL52 1.1V 4Rx4 ECC RDIMM Supermicro X14SDV-42C-SP3F memory upgrade

SKU CH-9X98-SW1RA

256 GB kit of four 64 GB DDR5 RDIMMs at 6400 MT/s with CL52, 1.1 V, 4Rx4 ECC registered, validated for the Supermicro X14SDV-42C-SP3F motherboard

  • 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 capacity with four 64 GB modules for maximum server memory density
  • DDR5 6400 speed and CL52 latency deliver rated throughput for demanding workloads
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 1 V operation matches the motherboard specification for reliable power efficiency
  • Verified fitment for Supermicro X14SDV-42C-SP3F with 288-pin RDIMM form factor

Targeted Server Upgrade

This 256GB kit contains four 64GB DDR5 6400 modules built to the exact rank, voltage and timing the Supermicro X14SDV-42C-SP3F memory controller expects. Registered ECC RDIMM architecture offloads the controller so every slot runs fully populated at rated speed while single-bit error correction prevents silent data corruption in production workloads.

Physical Fit And Daily Handling

Each module uses the 288-pin RDIMM form factor this motherboard requires, not UDIMM or SODIMM, and carries no heat spreader to keep clearance simple inside dense chassis. The 1.10V operating voltage matches the board specification, and the 4Rx4 organisation follows the population rules documented in the system manual for reliable recognition at full capacity.

Thermals Noise And Power In Normal Use

Registered buffering reduces electrical load on the memory controller, helping the kit run cool and quiet under sustained server loads without active cooling on the modules themselves. ECC correction operates transparently in hardware, adding no audible noise or software overhead while maintaining data integrity across all 256GB during continuous operation.

How it compares

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

Price $7,622.99
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 $29.78 per GB
Pricier than about 85% 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 numberMR51200-944K4
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

Will DDR5-6400 (PC5-51200) run at its rated speed on the Supermicro X14SDV-42C-SP3F?

Yes, the kit is spec-matched to the board's DDR5-6400 memory controller so all four modules operate at 6400 MT/s with CL52 timings at 1.1 V.

What physical slot and form factor do these modules need on the Supermicro X14SDV-42C-SP3F?

They require four 288-pin DDR5 RDIMM slots; the board must accept registered ECC DIMMs, not UDIMM or SODIMM.

What population order should I follow when installing all four 64 GB RDIMMs?

Consult the Supermicro X14SDV-42C-SP3F manual for the approved DIMM population sequence; install modules in the exact slots listed for a 4-DIMM configuration.

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