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Six green DDR5 RDIMM sticks, black chips, no heat spreaders

NEMIX RAM

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

SKU CH-GZG1-RQWJE

384 GB DDR5 ECC registered server memory kit of six 64 GB modules at 4800 MT/s, CL40, 1.1 V, validated for Supermicro SYS-221HE-FTNR, SYS-221HE-FTNRD and SYS-221HE-TNR platforms

  • 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 scales demanding server workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design protects data integrity in mission-critical environments
  • 1V operation reduces power draw across six modules
  • Validated for SuperMicro SuperServer SYS-221HE series compatibility

384GB DDR5 4800 ECC RDIMM kit

This 384GB kit contains six 64GB DDR5 4800 registered DIMMs with ECC and a CL40 latency. It is built for Supermicro SuperServer SYS-221HE-FTNR, SYS-221HE-FTNRD and SYS-221HE-TNR platforms that require registered memory. Each module operates at 1.1V and uses a 2Rx4 organisation. The 288-pin form factor fits server motherboards designed for DDR5 RDIMMs.

Sustained load behaviour with registered ECC

Registered buffering reduces electrical load on the memory controller, helping stability during continuous server workloads. ECC corrects single-bit errors and detects multi-bit errors to protect data integrity under sustained operation. The 1.1V operating voltage supports consistent throughput at the rated 4800 MT/s speed. Modules are stress tested under load by the supplier before shipping.

Compatibility checks before ordering

Verify that your Supermicro system lists DDR5 4800 RDIMM support and can accept 64GB dual-rank modules in all six slots. Confirm the motherboard BIOS version qualifies this capacity and rank configuration. Ensure the chassis provides enough DIMM slots for the full 6x64GB kit. Check that your workload benefits from registered ECC memory rather than unbuffered alternatives.

How it compares

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

Price $9,078.99
Pricier than about 86% 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 $23.64 per GB
Pricier than about 68% 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 much heat and power does the 1.10V CL40 kit draw when running all day in a server?

Each 64 GB module operates at 1.10 V with CL40 timings; DDR5 RDIMMs at this voltage typically run cool enough for continuous 24/7 server loads without extra cooling.

What motherboard slots and CPU memory controllers are required for the 288-pin 2Rx4 registered DIMMs?

The kit needs a Supermicro motherboard with DDR5 RDIMM slots and a CPU that supports registered ECC memory; consumer boards with unbuffered slots will not work.

Can the six 64 GB sticks be mixed with smaller DDR5 ECC RDIMMs already installed in the same system?

Yes, provided the existing modules are also DDR5 4800 registered ECC RDIMMs; mixing ranks or speeds may force the channel to the slowest common timing.

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