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Eight green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM memory upgrade

SKU CH-54YM-99A65

Eight 128 GB DDR5 4800 CL40 4Rx4 ECC registered DIMMs deliver 1 TB for Supermicro SYS-121H-TNR, SYS-221H-TNR and SYS-221H-TN24R servers

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity from eight 128GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design for data integrity
  • 4Rx4 organisation at CL40 latency
  • Validated for SuperMicro Hyper SuperServer platforms

1 TB DDR5 ECC RDIMM kit

This eight-module kit delivers 1 TB of DDR5 4800 registered ECC memory for Supermicro servers and workstations. It targets IT professionals who need maximum capacity per channel in mission-critical environments.

1 TB capacity with CL40 latency

The 8 x 128 GB configuration fills all slots on supported platforms, providing headroom for large virtualisation workloads and in-memory databases. Bandwidth tops out at the DDR5 4800 standard, so latency-sensitive tasks may hit limits before capacity does.

288-pin registered DIMM form factor

Modules operate at 1.1 V and require a motherboard qualified for 4Rx4 registered DDR5 ECC. No heat spreaders are fitted, so chassis airflow must handle thermal load. The kit frees procurement time by arriving pre-validated for the listed Supermicro Hyper SuperServer models.

How it compares

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

Price $31,389.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $31.39 per GB
Pricier than about 90% 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 numberMR38400-744K8
Total capacity1 TB (8 × 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 items1 TB (8 × 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 288-pin DDR5 RDIMM modules work with my existing Supermicro SYS-121H-TNR server?

Yes, the kit is validated for the SYS-121H-TNR, SYS-221H-TNR and SYS-221H-TN24R platforms.

How do I verify the ECC RDIMM kit is running at the rated 4800 speed and CL40 latency after installation?

Check the memory configuration in the system BIOS or use a hardware utility; it should report DDR5 4800 (PC5-38400) with CL40 timings.

Does the package include anything besides the eight 128 GB modules, or do I need extra parts?

The box contains only the eight 128 GB DDR5 4800 CL40 ECC RDIMM modules; no cables, brackets or additional components are supplied.

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