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Four green DDR5 RDIMM modules with black chips and gold contacts

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 CL40 ECC RDIMM Server Memory Upgrade

SKU CH-VPJ3-VBPN1

512GB DDR5-4800 ECC registered server kit with four 128GB modules at CL40 and 1.1V for Supermicro systems

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity in servers
  • CL40 latency at 1.10 V operating voltage
  • Validated for Supermicro IOT SuperServer 221HE series

Server memory kit for Supermicro DDR5 systems

This kit supplies 512 GB across four 128 GB registered DIMMs built for Supermicro IOT SuperServer platforms. It runs at DDR5 4800 with CL40 latency and 1.1 V operation. ECC and 4Rx4 organisation protect data integrity in mission-critical workloads.

Suited for administrators expanding Supermicro

Builders who need registered ECC memory for these specific Supermicro models will find a validated match. Systems that require unbuffered DIMMs, lower capacities or a different DDR generation cannot use this kit.

Installs in 288-pin DDR5 RDIMM slots on supported

The modules draw 1.1 V and present a 4Rx4 load to the memory controller. No heat spreaders are fitted, so chassis airflow must handle thermal management. The four-DIMM population fills four slots and leaves remaining channels free for further expansion.

How it compares

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

Price $14,232.99
Pricier than about 90% 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 $27.80 per GB
Pricier than about 78% 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

Does this kit require a motherboard with 288-pin DDR5 RDIMM slots?

Yes, each module uses the 288-pin DDR5 RDIMM form factor and must be installed in matching registered DIMM slots.

Can I mix these 4Rx4 CL40 modules with existing 2Rx8 DDR5 RDIMMs?

Mixing different rank architectures is not recommended; the server memory controller expects uniform rank configuration per channel for stable operation.

How do I verify the kit runs at 4800 MT/s with CL40 after installation?

Check the BIOS memory information or use a tool such as dmidecode to confirm speed 4800, CAS latency 40 and 1.1 V operation.

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