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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB 12x64GB DDR5 4800 ECC RDIMM 2Rx4 CL40 1.1V SuperMicro Server

SKU CH-0M94-ZJGQY

Twelve 64 GB DDR5 4800 ECC registered DIMMs deliver 768 GB at CL40 and 1.1 V for Supermicro CloudDC SuperServer systems

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 768 GB total capacity from twelve 64 GB modules
  • DDR5 4800 MT/s speed with CL40 latency
  • ECC registered RDIMM protects data integrity under load
  • 1 V operation reduces power draw per module
  • Validated for Supermicro CloudDC SuperServer 621C-TN12R, 611C-TN4R, 121C-TN2R

Purpose-built server memory kit

This 768GB kit delivers 12 matched 64GB DDR5 4800 RDIMM modules for SuperMicro CloudDC SuperServer platforms. It targets administrators who need maximum registered ECC capacity in validated configurations. The modules operate at 1.1V with CL40 latency and 2Rx4 organisation.

Registered ECC RDIMM with 2Rx4 layout

The single specification that determines fit is the registered ECC RDIMM form factor with 2Rx4 rank architecture. Only motherboards that explicitly support DDR5 registered DIMMs at this rank structure will initialise the kit. Unbuffered or consumer UDIMM slots cannot use these modules.

768GB total across twelve slots

Twelve 64GB modules fill every DIMM slot on compatible dual-socket SuperMicro SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R systems. Capacity headroom suits large-scale virtualisation, in-memory databases and HPC workloads. Systems with fewer than twelve slots or lower per-slot limits cannot accept the full kit.

How it compares

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

Price $19,514.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $25.41 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 numberMR38400-924K12
Total capacity768 GB (12 × 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 items768 GB (12 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What does the 4800 MT/s rating mean once these modules are installed in a SuperMicro server?

The kit runs at the standard DDR5 4800 MT/s JEDEC speed, delivering PC5-38400 bandwidth per module when the server memory controller is set to its default profile.

How does the 288-pin DDR5 RDIMM interface limit the maximum speed in this configuration?

The registered 288-pin DDR5 form factor locks the kit to the 4800 MT/s JEDEC baseline; higher frequencies would require a motherboard and CPU that support overclocked memory profiles.

What physical space and slot layout are needed to fit all twelve 64 GB modules?

Twelve 288-pin RDIMM slots are required, which matches the memory capacity of the listed SuperMicro CloudDC SuperServer models SYS-621C-TN12R, SYS-611C-TN4R and SYS-121C-TN2R.

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