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Two green DDR5 RDIMM sticks, bare chips, no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 6400MHz PC5-51200 4Rx4 1.1V 288-PIN ECC RDIMM Server Memory Kit

SKU CH-PECX-VM6BZ

256GB dual-channel DDR5 kit with ECC and registered buffering at 6400MHz for Supermicro X14SBW-F servers

  • Total capacity256 GB (2 × 128 GB)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Memory rank4Rx4
  • 256 GB total capacity from two 128 GB modules
  • DDR5 6400 MHz speed rated at PC5-51200
  • ECC registered design with 4Rx4 organisation for data integrity
  • Low 1.1 V operating voltage reduces power draw
  • Validated for Supermicro X14SBW-F motherboard compatibility

Supermicro X14SBW-F DDR5 RDIMM Kit

This 256GB kit delivers two 128GB registered DDR5 modules built for the Supermicro X14SBW-F platform. ECC and registered buffering provide the data integrity and signal stability required in enterprise server workloads. The kit operates at 6400MHz with a CAS latency of 52 at 1.1V.

IT Teams Running Memory-Intensive Server Roles

Suits administrators scaling virtualisation hosts, in-memory databases or AI inference nodes on the validated Supermicro platform. Builders needing unbuffered UDIMMs, non-ECC modules or consumer desktop memory should look elsewhere as this kit is registered ECC RDIMM only.

256GB Registered Capacity With DDR5 6400MHz Headroom

The dual 128GB 4Rx4 modules fill two slots for large dataset caching and multi-tenant VM density. Headroom exists for workloads that benefit from high bandwidth at 6400MHz. Systems requiring more than 256GB per channel or lower latency than CL52 will need a different configuration.

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 (2 × 128 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 numberMR51200-744K2
Total capacity256 GB (2 × 128 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 (2 × 128 GB) DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

What motherboard slot and memory type are required for these 288-PIN DDR5 RDIMMs?

A Supermicro X14SBW-F motherboard with DDR5 RDIMM slots is required; the kit uses 288-PIN DDR5 registered modules that only fit DDR5 RDIMM sockets.

Will these CL52 6400MHz modules downclock automatically if the board only supports lower DDR5 speeds?

Yes, DDR5 RDIMMs negotiate speed with the memory controller, so they will run at the highest speed the Supermicro platform allows.

How can I confirm the kit is running at 6400MHz with ECC active after installation?

Check the BIOS memory information or run a tool such as dmidecode to verify 6400MHz data rate, CL52 timings and ECC enabled on both 128GB modules.

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