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Green circuit board DDR5 memory module with black chips no heat spreader 288-pin RDIMM

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 PC5-38400 CL40 1.1V 4Rx4 288-Pin ECC RDIMM memory upgrade

SKU CH-KR78-GPK9B

128GB DDR5 4800 ECC registered RDIMM with CL40 latency and 1.1V operation

  • 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 memory-intensive server workloads
  • DDR5 4800 speed delivers high data throughput
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces power draw per module
  • Validated for SuperMicro SYS-211SE and X31SEED-F systems

128 GB DDR5 ECC RDIMM module

This NEMIX RAM module delivers 128 GB of DDR5 4800 memory in a single 288-pin registered DIMM. It operates at 1.1 V with CL40 latency and 4Rx4 organisation. ECC and registered buffering provide the error correction and signal integrity required by SuperMicro IoT SuperServer platforms such as the SYS-211SE-31D and SYS-211SE-31A.

Suited for SuperMicro DDR5 servers only

This module fits SuperMicro IoT SuperServer systems that accept DDR5 4800 ECC RDIMMs. Builders using desktop motherboards, laptops or any platform limited to unbuffered memory cannot use this part. Buyers needing non-ECC modules, lower capacities or different speeds should look elsewhere.

128 GB single-stick capacity

The 128 GB density in one RDIMM lets you reach high memory totals with fewer occupied slots. This is the key specification that determines whether the module matches your server’s maximum supported capacity per DIMM and overall memory target.

How it compares

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

Price $4,163.99
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 $32.53 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

Will the 288-pin DDR5 RDIMM fit the DIMM slots on a Supermicro SYS-211SE-31D?

Yes, the module is a 288-pin DDR5 RDIMM built for the Supermicro SYS-211SE-31D and SYS-211SE-31A systems.

What is the correct way to seat this 128GB registered ECC module?

Power down the server, open the chassis, align the notch on the 288-pin edge connector with the slot key, press firmly until both retention clips click, then power on and verify the full 128GB appears in the BIOS.

When should this DDR5 4800 ECC RDIMM be replaced?

Replace the module if the system logs uncorrectable ECC errors, fails memory diagnostics, or becomes unstable under load; the registered design and 1.10V operation are rated for continuous server duty.

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