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

NEMIX RAM

NEMIX RAM MR38400-314K6 192GB (6x32GB) DDR5 4800 CL40 1.1V ECC RDIMM memory upgrade

SKU CH-9KCQ-F3YG1

Six 32 GB DDR5 4800 CL40 1.1 V ECC RDIMMs totalling 192 GB for SuperMicro GPU SuperServer systems

  • Total capacity192 GB (6 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 192GB total capacity across six 32GB modules for high-density server workloads
  • DDR5 4800 speed rated at PC5-38400 for enterprise throughput
  • ECC registered RDIMM design protects data integrity in mission-critical systems
  • 1V operating voltage reduces power draw in dense SuperMicro configurations
  • Validated compatibility with SuperMicro SYS-821GE-TNHR, SYS-821GV-TNR, SYS-421GE-TNRT

192GB DDR5 ECC RDIMM kit

This 192GB kit contains six 32GB DDR5 4800 CL40 registered DIMMs built for Supermicro GPU SuperServer models including the SYS-821GE-TNHR, SYS-821GV-TNR and SYS-421GE-TNRT. The modules run at 1.1V with ECC and registered buffering for data integrity in server workloads. They target IT teams expanding memory capacity in compatible Supermicro platforms.

Sustained load behaviour

Each module uses 1Rx4 organisation with major OEM Samsung, Micron or Hynix chips tested under load for stability. The registered design reduces electrical load on the memory controller during continuous operation. CL40 latency and 4800 MT/s throughput deliver consistent bandwidth for virtualization, GPU compute and database tasks without thermal throttling.

Installation notes

The 288-pin DDR5 RDIMM form factor fits standard server DIMM slots; no heat spreader is present so airflow clearance is straightforward. Populate all six slots per the Supermicro population rules for the target chassis to enable full 192GB capacity. Verify the BIOS recognises the registered ECC configuration before deploying into production.

How it compares

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

Price $5,564.99
Pricier than about 81% of the 21,161 comparable items (median $397.99).
Total capacity 192 GB (6 × 32 GB)
Higher than about 75% of the 20,941 comparable items (median 32 GB).
Price per GB $28.98 per GB
Pricier than about 82% 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 numberMR38400-314K6
Total capacity192 GB (6 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items192 GB (6 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much heat does the 1.1 V 4800 MHz kit produce when running continuously?

The modules operate at 1.10 V DDR5 standard voltage with no heat spreader, so sustained load adds minimal thermal load to the server airflow path.

What motherboard slot and firmware support is required for these 288-pin RDIMMs?

A Supermicro motherboard with DDR5 RDIMM slots, registered ECC support in BIOS and the correct memory-channel population rules for 1Rx4 modules.

Can I mix these CL40 1Rx4 modules with other DDR5 ECC RDIMMs I already have?

They will work together only if the existing modules are also DDR5 4800 CL40 1Rx4 registered ECC; mixed ranks or speeds force the system to the lowest common settings.

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