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Eight green DDR5 RDIMM modules in static bags

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR5 4800 ECC RDIMM CL40 1.1V 1Rx4 memory upgrade

SKU CH-AF3E-SW9SQ

A 256 GB kit of eight 32 GB DDR5 4800 ECC registered DIMMs 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
  • 256GB total capacity scales memory-heavy workloads
  • DDR5 4800 speed feeds data to fast server CPUs
  • ECC registered design protects data integrity under load
  • 1V operation reduces power draw per module
  • Validated for Supermicro CloudDC SuperServer systems

256GB DDR5 ECC RDIMM Kit

This 256GB kit contains eight 32GB DDR5 4800 registered DIMMs with ECC and CL40 latency. It operates at 1.10V using 1Rx4 organisation and 288-pin form factor. The modules are validated for Supermicro CloudDC SuperServer platforms including the 621C, 611C and 121C series.

Suited for registered-memory servers only

This memory fits Supermicro systems that require DDR5 registered ECC RDIMMs. It will not work in platforms that accept only unbuffered UDIMMs or earlier DDR generations. Buyers needing lower capacities or non-ECC modules should look elsewhere.

Eight-module 256GB capacity

The kit delivers 256GB across eight 32GB sticks, which is the single specification that determines whether the server’s memory slots and maximum supported capacity are satisfied.

How it compares

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

Price $6,622.99
Pricier than about 82% 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 $25.87 per GB
Pricier than about 71% 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 these 288-pin DDR5 RDIMMs fit the memory slots in a Supermicro CloudDC SuperServer SYS-621C-TN12R?

Yes, the kit is listed as compatible with the SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R, so the 288-pin DDR5 RDIMM modules will seat in those server boards.

What is the correct order for populating the eight 32 GB modules across the memory channels?

Follow the Supermicro motherboard manual for the specific CPU socket; typically you fill one DIMM per channel starting with the slot farthest from the processor, but the exact sequence varies by board.

Do the registered ECC modules need any firmware update or battery-backed setting to keep error correction active over time?

No firmware or battery is required; ECC and registered operation are handled by the memory controller once the modules are installed and the BIOS recognises the 4800 MT/s CL40 1.10 V configuration.

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