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Six green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM MR38400-924K6 384GB (6×64GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-ZB3R-GH3T7

A 384 GB DDR5 4800 ECC registered memory kit containing six 64 GB RDIMMs at 1.1 V CL40 for compatible 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
  • 384 GB total capacity from six 64 GB modules
  • DDR5 4800 speed with CL40 latency for server workloads
  • ECC registered design detects and corrects data errors
  • 1 V operating voltage reduces power draw
  • Validated for Supermicro CloudDC SuperServer systems

384GB DDR5-4800 ECC RDIMM server kit

This NEMIX RAM kit supplies 384GB of DDR5-4800 registered ECC memory across six 64GB modules. 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 a 2Rx4 organisation on major OEM DRAM.

Suited for memory-bound server workloads.

IT teams running virtualisation, databases or large-scale analytics on the listed Supermicro systems gain the capacity and error correction those workloads demand. Builders targeting consumer desktop or workstation motherboards should look elsewhere, as the registered ECC design and DDR5-4800 specification are not supported on those platforms.

Registered ECC DDR5-4800 at 1.1V

The single specification that decides fit is the registered ECC DDR5-4800 interface at 1.1V with CL40 timing. Only motherboards qualified for this exact combination will initialise the modules and enable error correction. Verify the server model against the compatible list before ordering.

How it compares

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

Price $9,887.99
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 $25.75 per GB
Pricier than about 70% 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

Do I need a SuperMicro CloudDC SuperServer SYS-621C-TN12R, SYS-611C-TN4R or SYS-121C-TN2R for this 384GB kit to work?

Yes, this 384GB DDR5 4800 ECC RDIMM kit is validated for those three SuperMicro CloudDC SuperServer models. The modules are 288-pin registered DIMMs that require a motherboard with matching DDR5 RDIMM slots and ECC support.

Can I mix these 64GB 2Rx4 modules with existing DDR5 4800 RDIMMs that have a different rank or voltage?

Mixing ranks or voltages is not recommended. These modules run at 1.1V with a 2Rx4 organisation; all six slots should be populated with identical modules to maintain stability and ECC integrity.

How do I verify the kit is running at DDR5 4800 CL40 after installation?

Enter the system BIOS or use a hardware-info utility to confirm the memory reports 4800 MT/s, CL40 timings, 1.1V and ECC active across all 384GB.

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