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Green 288-pin DDR5 RDIMM module, no heat spreader, 128GB 4Rx4 ECC registered

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM SuperMicro Server Memory Upgrade

SKU CH-J17G-EP35M

A 128GB DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM module for SuperMicro servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity supports heavy server workloads
  • DDR5 4800 speed delivers high throughput for data-intensive tasks
  • ECC registered design protects data integrity in mission-critical environments
  • 1 V operation reduces power draw per module
  • Validated for SuperMicro SYS-211SE and X31SEED-SF platforms

128GB DDR5 4800 ECC RDIMM

This single 128GB module uses DDR5 technology at 4800MHz with CL40 latency. It is a registered ECC RDIMM built for SuperMicro IoT SuperServer systems such as the SYS-211SE-31DS, SYS-211SE-31AS and X31SEED-SF motherboards. The 4Rx4 organisation and 1.10V operation target enterprise server and workstation environments requiring maximum density per slot.

Verify DDR5 RDIMM slot availability

Before ordering, confirm your SuperMicro platform accepts 288-pin DDR5 RDIMMs and supports 4Rx4 registered modules at this density. Check the motherboard manual for maximum capacity per channel and population rules for 4Rx4 configurations. Ensure the BIOS is updated to a version that validates this module part number MR38400-744K1 for stable operation.

Sustained load stability validated

Modules undergo rigorous stress testing under continuous load to ensure reliability in mission-critical deployments. The registered buffer and ECC functionality maintain data integrity during prolonged compute tasks. Samsung, Micron or Hynix major OEM chipsets provide consistent signal quality at 1.10V across extended operating periods in dense server configurations.

How it compares

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

Price $4,040.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $31.57 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 numberMR38400-744K1
Total capacity128 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 items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the module ship alone or with extra parts such as heat spreaders or cables?

The package contains one 128 GB DDR5 4800 CL40 4Rx4 ECC RDIMM module; no heat spreader or additional accessories are included.

Why would I pick the 128 GB 4Rx4 CL40 stick instead of a smaller capacity?

A single 128 GB 4Rx4 module fills one 288-pin slot and delivers maximum density for SuperMicro servers that support this rank configuration.

What does the 4800 MT/s rating mean once the DIMM is installed in a SuperMicro system?

The module runs at 4800 MT/s (PC5-38400) with CL40 latency at 1.1 V, providing registered ECC bandwidth for compatible SuperMicro platforms.

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