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Four green DDR5 RDIMM modules, bare circuit boards with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM Server Memory Kit

SKU CH-W9MC-239GT

A 256 GB DDR5 ECC RDIMM kit of four 64 GB modules at 6400 MHz, CL52, 1.1 V, validated for Supermicro X14SBW-F servers

  • Total capacity256 GB (4 × 64 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank4Rx4
  • 256 GB total capacity from four 64 GB modules
  • DDR5 6400 MHz speed rated at PC5-51200
  • ECC registered design with 4Rx4 organisation for data integrity
  • 1 V operating voltage reduces power draw
  • Validated for Supermicro X14SBW-F server platforms

Supermicro X14SBW-F server memory

This 256 GB kit delivers four 64 GB DDR5 ECC RDIMM modules built for the Supermicro X14SBW-F platform. Registered buffering and on-die ECC protect data integrity in mission-critical workloads. The kit runs at 6400 MHz with CL52 latency at 1.1 V. No heat spreaders are fitted, so airflow must be managed by the chassis.

Registered DDR5 ECC RDIMM installation

Each module uses the 288-pin DDR5 RDIMM form factor and requires a motherboard that supports registered ECC memory and 4Rx4 organisation. The four-module population fills four DIMM slots and provides 256 GB total capacity. The 1.1 V operating voltage matches the DDR5 baseline for server platforms. Compatibility is validated for the Supermicro X14SBW-F system.

Suited for high-capacity server builds

Ideal for administrators expanding memory on a Supermicro X14SBW-F server for virtualisation, database or AI inference tasks. Builders needing non-ECC UDIMMs, lower capacities, or consumer desktop memory should look elsewhere. Systems that do not support registered ECC RDIMMs cannot use this kit.

How it compares

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

Price $7,810.99
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 $30.51 per GB
Pricier than about 87% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSupermicro Compatible Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server RAM
Part numberMR51200-944K4
Total capacity256 GB (4 × 64 GB)
Product type288-PIN DDR5 RDIMM
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
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

Questions about this item

Will the CL52 latency limit throughput during sustained workloads?

The kit runs at DDR5 6400 MT/s with CL52 timings, so latency is fixed at that specification under continuous load.

How much heat and power should I expect from four 64 GB modules running all day?

Each module operates at 1.10 V without a heat spreader; total capacity is 256 GB across four 4Rx4 registered DIMMs.

Does my Supermicro X14SBW-F need any specific firmware or slot population for this 4Rx4 kit?

The kit is validated for the Supermicro X14SBW-F; install all four 288-pin RDIMMs in the board’s DDR5 slots following the manual’s population rules.

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