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Four green DDR5 RDIMM sticks without heat spreaders, 288-pin, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 6400MHz ECC RDIMM memory upgrade

SKU CH-B122-PF9J2

A 256GB DDR5 ECC RDIMM kit running at 6400MHz CL52 for Supermicro servers

  • Total capacity256 GB (4 × 64 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank4Rx4
  • 256GB total capacity expands server memory headroom for large datasets
  • DDR5 6400MHz speed delivers high bandwidth for demanding workloads
  • ECC registered design detects and corrects errors to protect data integrity
  • 1V operation reduces power draw per module in dense configurations
  • Validated for Supermicro X14SBI-F ensures compatibility and stable operation

256GB DDR5 ECC RDIMM Kit

This 256GB kit contains four 64GB DDR5 6400MHz registered DIMMs built for Supermicro X14SBI-F servers. ECC and 4Rx4 organisation protect data integrity under continuous load. The modules run at 1.1V and carry a CL52 latency rating. IT teams handling virtualisation, databases or AI workloads use this capacity to keep large datasets in memory.

Registered ECC Modules With Major OEM Chips

Each stick uses Samsung, Micron or Hynix components tested under load before shipment. Registered buffering reduces electrical load on the memory controller, allowing all four slots to be populated at rated speed. The 288-pin DDR5 form factor fits the target board without adapters. No heat spreaders are included, so airflow in the chassis must handle thermal dissipation.

Suited For Supermicro X14SBI-F Memory Expansion

This kit matches the validated configuration for the named Supermicro system, giving administrators a straightforward path to 256GB. Builders needing different capacities, lower latency figures or non-ECC memory should look elsewhere. Systems that do not support registered ECC DDR5 cannot use these modules.

How it compares

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

Price $8,737.99
Pricier than about 85% 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 $34.13 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 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

Does the 4Rx4 ECC RDIMM configuration require any periodic firmware updates or module replacement over its service life?

The modules are built with major OEM Samsung, Micron or Hynix chips and validated for the Supermicro X14SBI-F platform; no firmware updates or scheduled replacement are needed.

What thermal limit will the 1.1 V DDR5 registered kit hit first during continuous heavy workloads?

Operating at 1.10 V with CL52 latency, the kit stays within standard DDR5 thermal envelopes; the registered buffer and ECC logic keep signal integrity stable before any temperature throttle occurs.

How much noise and heat does the 256 GB kit produce when the server runs all day?

The modules have no heat spreader or moving parts, so they add zero acoustic noise and only the normal DDR5 power draw at 1.10 V to the system’s overall thermal load.

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