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Twelve green DDR5 RDIMM modules without heat spreaders in a kit box

NEMIX RAM

NEMIX RAM 384GB (12×32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-XTP7-B8DY0

384 GB DDR5 ECC registered server memory kit with twelve 32 GB modules at 4800 MT/s CL40 1.1 V

  • Total capacity384 GB (12 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 384 GB total capacity from twelve 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • 1 V operating voltage reduces server power draw
  • Validated for Supermicro CloudDC SYS-621C-TN12R SYS-611C-TN4R SYS-121C-TN2R

384GB DDR5 ECC RDIMM kit

This NEMIX RAM kit provides 384GB of DDR5 4800 memory across twelve 32GB registered DIMMs. It is built for Supermicro CloudDC SuperServer platforms including the SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R. The modules run at 1.1V with CL40 latency and use 1Rx4 organisation.

Suits registered DDR5 servers only

IT teams managing compatible Supermicro CloudDC SuperServer systems can use this kit to maximise memory capacity with ECC protection. Workstations or desktops that require unbuffered UDIMMs or a different DDR generation cannot use these registered modules.

288-pin DDR5 RDIMM form factor

Each module uses the 288-pin DDR5 RDIMM interface, so the motherboard must provide registered DDR5 slots. A board wired for UDIMMs or an earlier DDR generation will not accept this kit.

How it compares

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

Price $10,606.99
Pricier than about 88% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (12 × 32 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $27.62 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 numberMR38400-314K12
Total capacity384 GB (12 × 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 items384 GB (12 × 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 server need all 12 DIMM slots free to install this 384GB kit?

The kit contains 12 modules of 32GB each, so the host must provide 12 available 288-pin DDR5 RDIMM slots.

Will these registered ECC RDIMMs work in a SuperMicro system that currently runs unbuffered ECC UDIMMs?

No, the modules are registered (RDIMM) with a 1Rx4 layout and 1.10V operation; they cannot be mixed with unbuffered UDIMMs.

How can I confirm the kit is running at the rated DDR5 4800 CL40 speed after installation?

Check the BIOS or OS memory report for PC5-38400 frequency and CAS latency 40 on all 12 modules.

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