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Twelve green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 768GB (12x64GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-8SZS-7WZ9P

12 x 64 GB DDR5-4800 ECC RDIMM kit totals 768 GB for Supermicro SSG-521E servers

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 768 GB capacity with twelve 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 for high throughput
  • ECC registered RDIMM design protects data integrity
  • Low 1.10 V voltage reduces server power draw
  • Validated for Supermicro SuperServer SSG-521E-E1CR24H and SSG-521E-E1CR24L

Capacity and configuration

This kit supplies 768GB of DDR5 memory across twelve 64GB registered DIMMs. It is built for Supermicro Storage SuperServer platforms that require high-density ECC modules. Each module runs at 4800MT/s with a CAS latency of CL40 and operates at 1.10V. The 2Rx4 organisation and 288-pin form factor match the server's memory slots.

Registered ECC with major OEM chips

The modules use Samsung, Micron or Hynix DRAM and include on-die error correction and register buffering. These features protect data integrity under sustained load and reduce electrical loading on the memory bus. No heat spreaders are fitted, so airflow in the server chassis must handle thermal management. The kit is validated for the listed Supermicro SSG-521E and X13SEDW models.

Suited for memory-intensive server workloads

This configuration targets administrators scaling virtualisation, database or storage nodes on the compatible Supermicro platforms. Buyers who need a different capacity, speed grade or unbuffered DIMMs should look elsewhere. Systems that do not support registered ECC DDR5 or that require heat-spreader-equipped modules are not a match for this kit.

How it compares

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

Price $20,396.99
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 $26.56 per GB
Pricier than about 73% 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

Will the 12 modules in this 768GB kit require any firmware updates or scheduled replacement after deployment?

The modules are stress-tested before shipping and carry a lifetime replacement warranty; no firmware updates or scheduled replacement intervals are required for the DDR5 RDIMM memory itself.

What thermal limit appears first when all 12 DDR5 4800 modules run at full load in a Supermicro SSG-521E chassis?

The registered DDR5 DIMMs operate at 1.10V without heat spreaders; sustained full-load temperatures are managed by the server's directed airflow design rather than a module-level throttle point.

How much power does the 12x64GB DDR5 4800 ECC RDIMM kit draw and how loud are the fans when the server runs 24/7?

Each module runs at 1.10V DDR5 standard voltage; total kit power scales with 12 ranks of 2Rx4 chips, while acoustic output depends on the Supermicro chassis fan curves, not the memory.

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