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Four green DDR5 RDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 512GB 4x128GB DDR5 4800 CL40 1.1V ECC RDIMM memory upgrade

SKU CH-GZJQ-35V77

512 GB DDR5 4800 CL40 ECC registered server memory kit with four 128 GB modules

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 512GB capacity across four 128GB modules
  • DDR5 4800 speed delivers high server throughput
  • ECC registered design protects data integrity
  • Low 1.1V operation reduces power draw
  • Validated for SuperMicro 821 and 421 GPU SuperServer systems

512 GB DDR5 RDIMM kit for Supermicro servers

This kit supplies four 128 GB registered DIMMs totalling 512 GB of DDR5 4800 memory. It is built for Supermicro GPU SuperServer models SYS-821GE-TNHR, SYS-821GV-TNR and SYS-421GE-TNRT where ECC registered modules are required.

Registered ECC design with 4Rx4 organisation

Each module uses a 4Rx4 layout at 1.1 V and CL40 latency, delivering error-correcting registered operation without a heat spreader. The 288-pin form factor matches the server motherboard slots specified for these systems.

Suited for IT teams expanding compatible

Buyers needing higher capacities per module or different memory speeds should look elsewhere. This kit is validated only for the listed Supermicro server models and will not fit consumer desktop boards.

How it compares

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

Price $15,534.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $30.34 per GB
Pricier than about 87% 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 numberMR38400-744K4
Total capacity512 GB (4 × 128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 4Rx4 registered DIMMs need any firmware updates or periodic reseating after installation?

The modules are rigorously stress tested under load before shipping and carry a lifetime replacement warranty; no firmware updates or scheduled reseating are required.

What thermal limit appears first when the kit runs at DDR5 4800 continuously in a Supermicro GPU SuperServer?

The registered DDR5 4800 DIMMs operate at 1.10 V without heat spreaders, so the memory controller’s thermal throttle point is reached before the DRAM itself overheats.

How audible are the 288-pin RDIMMs and what is their power draw at 1.1 V during all-day operation?

Solid-state DRAM produces no noise; total power draw is determined by the four 128 GB modules running at the rated 1.1 V DDR5 voltage.

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