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Four green DDR5 RDIMM sticks without heat spreaders, 288-pin, 64GB each

NEMIX RAM

NEMIX RAM 256GB 4x64GB DDR5 6400MHz CL52 1.1V 4Rx4 ECC Registered RDIMM Kit for Supermicro X14SDW-64CM-SP9F

SKU CH-NBFB-04K8Q

256GB kit of four 64GB DDR5 RDIMMs at 6400MHz CL52 with ECC and registered buffering for Supermicro X14SDW-64CM-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

Show 4 more
  • 256GB total capacity across four 64GB modules for maximum server memory density
  • DDR5 6400MHz speed with CL52 latency delivers rated bandwidth for compute-intensive workloads
  • Registered ECC architecture with 4Rx4 rank corrects single-bit errors and supports full population
  • 10V operating voltage matches DDR5 standard for efficient power draw in dense configurations
  • Verified compatible with Supermicro X14SDW-64CM-SP9F motherboard for guaranteed recognition and stability

Exact-Match DDR5 Kit for Supermicro X14SDW

This NEMIX RAM kit delivers 256 GB across four 64 GB DDR5-6400 Registered ECC RDIMMs. The modules run at 1.10 V with CL52 timing and a 4Rx4 rank structure that matches the motherboard's memory-controller expectations. Each stick uses a 288-pin form factor and major-brand DRAM for server-grade reliability.

Suited for fully populated X14SDW-64CM-SP9F builds

The kit targets administrators who need the exact capacity, voltage and rank layout the board specifies for maximum supported memory. Systems requiring unbuffered UDIMMs, SODIMMs, lower-density modules or non-ECC memory cannot use this Registered ECC configuration.

Handles full-capacity server workloads

Four registered ranks per DIMM let the memory controller drive all slots at rated speed while ECC corrects single-bit errors on the fly. The 1.10 V operating point keeps power draw in line with DDR5 server standards, and the CL52 latency is the spec the platform expects for stable operation.

How it compares

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

Price $8,957.99
Pricier than about 86% 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 $34.99 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 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

Does the Supermicro X14SDW-64CM-SP9F motherboard require Registered ECC DDR5 RDIMMs for this kit to function?

Yes, the motherboard requires 288-pin Registered DDR5 RDIMMs with ECC; this kit matches that exact form factor and protocol so the memory controller recognises each module at full capacity.

Will the 4Rx4 organisation of these modules work with other DDR5 RDIMMs already installed in the server?

The kit uses a 4Rx4 rank structure at 1.1 V; mixing different rank configurations can prevent full-speed operation, so populate remaining slots only with identical 4Rx4 Registered ECC DDR5 modules.

How can I confirm the kit is running at DDR5 6400 CL52 after installation?

Enter the BIOS or use a hardware utility to verify the memory speed reads 6400 MT/s (PC5-51200) and CAS latency shows CL52 with all four modules detected at 64 GB each.

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