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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR5 4800 CL40 ECC RDIMM SuperMicro Compatible memory upgrade

SKU CH-8JDN-CP7WX

Eight-module 256 GB DDR5 4800 CL40 ECC registered kit built for SuperMicro servers

  • 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 for demanding server workloads
  • DDR5 4800 speed with CL40 latency for responsive data handling
  • ECC registered RDIMM design protects data integrity in critical applications
  • 1 V operation reduces power draw across eight modules
  • Validated for SuperMicro SYS-111C-NR SYS-521C-NR X13SEDW-F systems

256GB DDR5 ECC RDIMM kit

This NEMIX RAM kit provides 256GB of DDR5 memory across eight 32GB registered DIMMs. It is built for SuperMicro UP SuperServer SYS-111C-NR and SYS-521C-NR systems using the X13SEDW-F motherboard. The modules deliver ECC protection and registered buffering for stable server operation.

DDR5 4800 registered interface

The DDR5 4800 standard sets the electrical and timing limits for these modules. Registered DIMMs place a register between the DRAM and the memory controller, which reduces electrical load but adds one cycle of latency. The PC5-38400 rating defines the peak transfer rate available to the platform.

Check SuperMicro platform support

Verify that your SuperMicro server or workstation accepts 288-pin DDR5 RDIMMs running at 1.1V with a CL40 latency profile. Confirm the motherboard supports 1Rx4 rank organisation and the full 256GB capacity across all eight slots. Consult the system manual for approved memory population rules before ordering.

How it compares

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

Price $7,585.99
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 $29.63 per GB
Pricier than about 84% 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

Should I pick the 256GB kit with eight 32GB modules or a smaller capacity for my SuperMicro server?

The kit provides 256GB total across eight 32GB RDIMMs, matching the maximum supported population for many SuperMicro DDR5 platforms.

What does the DDR5 4800 CL40 rating deliver once installed in a SuperMicro SYS-111C-NR or SYS-521C-NR?

Modules run at 4800 MT/s with CL40 latency at 1.1V, providing registered ECC throughput for sustained server workloads.

How does the 288-pin DDR5 RDIMM interface and PC5-38400 standard limit real-world performance?

The 288-pin registered DIMM form factor locks transfer rate to 4800 MT/s and bandwidth to 38400 MB/s per module, capped by the DDR5 RDIMM specification.

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