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Four green DDR5 RDIMM modules, bare chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 ECC RDIMM SuperMicro Compatible memory upgrade

SKU CH-PKX5-WJN7M

128 GB DDR5 ECC registered server memory kit with four 32 GB modules at 4800 MT/s CL40 for SuperMicro systems

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB kit expands server capacity with four 32 GB modules
  • DDR5 4800 speed delivers PC5-38400 bandwidth for demanding workloads
  • ECC registered design detects and corrects single-bit errors automatically
  • 1 V operation reduces power draw in dense configurations
  • Validated for SuperMicro SYS-211SE and X31SEED-F platforms

128GB DDR5 4800 ECC RDIMM kit

This NEMIX RAM kit provides 128GB of DDR5 4800 registered ECC memory across four 32GB modules. It operates at 1.1V with CL40 latency and uses a 288-pin RDIMM form factor. The modules are 1Rx4 rank and built with major OEM chips from Samsung, Micron or Hynix.

For SuperMicro SYS-211SE and X31SEED-F servers

This memory is validated for SuperMicro IoT SuperServer SYS-211SE-31D, SYS-211SE-31A and MBD-X31SEED-F systems. It suits administrators upgrading those specific platforms with registered ECC RDIMMs. Builders needing unbuffered UDIMMs, non-ECC modules or different form factors for other motherboards should look elsewhere.

Check motherboard DDR5 RDIMM support and slot count

Verify your SuperMicro motherboard accepts DDR5 4800 registered ECC RDIMMs and has four available DIMM slots for this 4x32GB configuration. Confirm the system BIOS supports 1Rx4 rank modules at this density. Ensure the platform requires 1.1V operation and 288-pin DDR5 modules before ordering.

How it compares

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

Price $3,544.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.70 per GB
Pricier than about 77% 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 numberMR38400-314K4
Total capacity128 GB (4 × 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 items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does my SuperMicro IoT SuperServer SYS-211SE-31D need any specific BIOS setting to recognise the 288-pin DDR5 RDIMM kit?

The modules run at 1.1 V and CL40; the server BIOS typically detects those SPD values automatically, so no manual configuration is usually required.

Can I keep my existing DDR5 4800 ECC RDIMMs and add this 4×32 GB kit to the same motherboard?

Yes, provided the board supports mixed ranks; the new sticks are 1Rx4, so they will operate alongside other DDR5 4800 registered modules at the common speed.

How do I confirm the full 128 GB is active and error-correction is working after installation?

Boot into the BIOS or OS and verify 128 GB reported with ECC status enabled; memory-test tools will also show corrected error counters at zero.

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