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Eight green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 128GB (8x16GB) DDR5 4800 ECC RDIMM CL40 1.1V SuperMicro SYS-121H SYS-221H memory upgrade

SKU CH-B06A-V5QDD

Eight 16 GB DDR5 ECC RDIMM modules at 4800 MHz CL40 1.1 V for SuperMicro SYS-121H and SYS-221H servers

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity across eight 16 GB modules for high-density server workloads
  • DDR5 4800 speed delivers 38400 MT/s bandwidth for demanding applications
  • ECC registered RDIMM design ensures data integrity in mission-critical environments
  • Low 1.10 V operation reduces power draw and thermal load
  • Validated for SuperMicro SYS-121H and SYS-221H Hyper SuperServer systems

Compatible SuperMicro DDR5 Kit

This 128 GB kit contains eight 16 GB DDR5 modules rated at 4800 MT/s with CL40 latency and 1.1 V operation. Registered ECC RDIMM design provides error correction for data integrity. The kit targets SuperMicro SYS-121H and SYS-221H server platforms.

Administrators seeking registered ECC memory

System builders who need validated compatibility with the listed SuperMicro Hyper SuperServer models will find this kit appropriate. Workstations requiring unbuffered non-ECC DIMMs or desktop boards limited to lower densities should consider other memory types.

Registered ECC RDIMM form factor

Each module uses a 288-pin DDR5 RDIMM layout with 1Rx8 organisation. The registered buffer and ECC function require a motherboard chipset that supports registered DDR5 memory. Verify platform support before purchase.

How it compares

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

Price $3,222.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.18 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 numberMR38400-618K8
Total capacity128 GB (8 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (8 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I choose the 8x16GB kit or a different capacity for my SuperMicro SYS-121H or SYS-221H?

The kit provides 128GB total using eight 16GB modules; populate all eight slots to run the memory controller at DDR5 4800 with 1Rx8 registered ECC DIMMs.

What does DDR5 4800 CL40 mean for real-world throughput in a SuperMicro server?

The modules run at 4800 MT/s with CAS latency 40 at 1.1V; registered ECC buffering adds one cycle but keeps data integrity under sustained server loads.

How does the 288-pin RDIMM interface limit speed or capacity on these platforms?

Each 288-pin DDR5 RDIMM is a 1Rx8 registered ECC module at 1.1V; the platform memory controller sets the maximum supported speed and total capacity.

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