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

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 6400MHz CL52 ECC RDIMM memory upgrade

SKU CH-RKAS-G6FQ8

256 GB DDR5 ECC RDIMM kit at 6400 MHz with CL52 latency for Supermicro 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 for memory-intensive server workloads
  • DDR5 6400 MHz speed for high-throughput data processing
  • ECC registered design detects and corrects single-bit errors
  • 10 V operating voltage reduces power draw in dense configurations
  • Validated for Supermicro X14SBW-TF motherboard compatibility

256GB DDR5 ECC RDIMM kit

This NEMIX RAM kit supplies 256GB across four 64GB DDR5 modules rated at 6400MHz with CL52 latency. Registered ECC design and 1.10V operation target stability in compatible Supermicro server platforms. The 288-pin RDIMM form factor uses major OEM Samsung, Micron or Hynix chips in a 4Rx4 organisation.

Suited for Supermicro X14SBW-TF upgrades

Builders expanding memory on the named Supermicro board gain registered ECC capacity with validated compatibility. Systems requiring unbuffered DIMMs, non-ECC modules or lower-density kits should select a different product. Workloads that exceed 256GB per channel or need heat spreaders will also need an alternative.

256GB total capacity headroom

Four 64GB modules fill four slots and deliver 256GB of registered ECC memory for virtualisation, database or AI inference tasks. The kit runs out when the platform demands more than 256GB in this configuration or when thermal design requires integrated spreaders. Additional capacity requires a motherboard with more slots or higher-density modules.

How it compares

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

Price $9,216.99
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 $36.00 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

Will this 256GB DDR5 ECC RDIMM kit work in my Supermicro X14SBW-TF motherboard?

Yes, the kit is validated for the Supermicro X14SBW-TF platform and ships as a matched set of four 64GB registered DIMMs.

Can I mix these 6400MHz CL52 modules with slower DDR5 RDIMMs already installed?

The motherboard will run all installed DDR5 RDIMMs at the speed and latency of the slowest module present.

How do I verify the 256GB kit is running at 6400MHz with ECC active after installation?

Check the memory speed and ECC status in the BIOS setup or use a tool such as dmidecode to confirm 6400MHz operation and error-correction enabled.

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