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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 256GB (8×32GB) DDR5 4800 CL40 ECC RDIMM SuperMicro X13SEW-TF X13SEW-F memory upgrade

SKU CH-JN0T-YSYVV

Eight 32 GB DDR5 4800 CL40 ECC registered DIMMs totalling 256 GB, validated for SuperMicro X13SEW motherboards

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity across 8 modules of 32 GB each
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design protects data integrity in server workloads
  • CL40 latency at 1.1 V operating voltage
  • Validated for SuperMicro X13SEW-TF and X13SEW-F motherboards

Server Memory Kit

This NEMIX RAM kit provides 256GB of DDR5 ECC registered memory in eight 32GB modules. It is built for Supermicro X13SEW-TF and X13SEW-F motherboards that require registered DIMMs with error correction. The kit targets administrators who need maximum supported capacity for virtualization or database workloads. Each module runs at 1.10V with CL40 latency.

Registered Upgrade Path

The kit replaces unbuffered or lower-capacity DDR5 DIMMs when the platform demands registered signalling and ECC integrity. The jump is worth it when the motherboard firmware requires registered modules or when the application cannot tolerate silent data corruption. Systems limited to unbuffered memory cannot use this kit.

Capacity Headroom

Eight ranks of 1Rx4 organization deliver 256GB across all eight 288-pin slots on compatible boards. This headroom handles large VM fleets and in-memory databases without swapping. The limit is reached when the CPU memory controller or board firmware caps total addressable memory below the installed amount.

How it compares

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

Price $7,690.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $30.04 per GB
Pricier than about 86% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K8
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB (8 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the SuperMicro X13SEW-TF and X13SEW-F motherboards?

Yes, the 288-pin DDR5 RDIMM form factor matches the memory slots on both SuperMicro X13SEW-TF and X13SEW-F boards.

What is the correct order to populate the eight 32GB modules for proper registration?

Follow the motherboard manual's channel population guide; registered DIMMs must fill primary slots first to initialise the memory controller correctly.

Do the Samsung, Micron or Hynix chips on these ECC RDIMMs require any firmware updates over time?

No firmware updates are needed for the DRAM chips; ECC error correction operates automatically once the modules are seated and the system boots.

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