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Six green DDR5 RDIMM modules without heat spreaders, 288-pin, 64 GB each

NEMIX RAM

NEMIX RAM 384GB (6x64GB) DDR5 4800 CL40 1.1V ECC RDIMM memory upgrade

SKU CH-092A-0C4G1

384GB DDR5 4800 ECC RDIMM kit with six 64GB modules for Supermicro servers

  • Total capacity384 GB (6 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 384GB total capacity across six 64GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered RDIMM for data integrity in servers
  • CL40 CAS latency at 1.1V operating voltage
  • 288-pin 2Rx4 design validated for SuperMicro FatTwin systems

384GB DDR5 ECC RDIMM kit for Supermicro servers

This NEMIX RAM kit provides 384GB of DDR5 4800 registered ECC memory across six 64GB modules. It is built for Supermicro FatTwin SuperServer platforms such as the SYS-F521E3-RTB, SYS-F511E2-RT and X13SEFR-A. The 2Rx4 organisation and 1.1V operation suit enterprise workloads that demand data integrity and high capacity.

Thermals noise and power at 1.1V

Operating at 1.1V, the modules draw minimal power for their density and run without heat spreaders, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, helping maintain stable temperatures in fully populated systems. No active cooling is included, so adequate case ventilation is required.

Upgrade from lower-capacity RDIMM sets

This kit replaces smaller DDR5 RDIMM configurations when workloads exceed their memory ceiling, such as virtualisation hosts, in-memory databases or large-scale compute nodes. The jump is worth it when the platform supports six modules per CPU and the application benefits from 384GB of addressable space. Systems limited to fewer slots or lower speeds will not utilise the full kit.

How it compares

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

Price $10,000.99
Pricier than about 87% of the 21,161 comparable items (median $397.99).
Total capacity 384 GB (6 × 64 GB)
Higher than about 85% of the 20,941 comparable items (median 32 GB).
Price per GB $26.04 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 numberMR38400-924K6
Total capacity384 GB (6 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items384 GB (6 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules into the SuperMicro FatTwin server and what step is often missed?

Power down the server, open the chassis, and seat each 64 GB module firmly until the ejector clips lock; the step often missed is verifying in BIOS that all six modules report 4800 MT/s and CL40 before closing the case.

What maintenance or replacement will the ECC RDIMM kit need over its service life?

No scheduled maintenance is required; if a module fails the ECC logic will flag correctable errors and the unit can be replaced individually under the lifetime replacement coverage.

What limit appears first when the 384 GB kit runs sustained workloads at 1.10 V?

The CL40 latency at 4800 MT/s is the first bottleneck; thermal throttling is unlikely because the registered modules operate without heat spreaders at the standard 1.10 V.

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