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Green printed circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 128GB DDR5 4800MHz PC5-38400 2Rx4 1.1V CL40 288-PIN ECC Registered RDIMM memory upgrade

SKU CH-S8BN-A86SN

128 GB DDR5 4800 MHz registered ECC RDIMM with 2Rx4 organisation, CL40 latency and 1.1 V operation for ASRock Rack GENOAD12M3-2Q servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB

Show 4 more
  • 128 GB capacity lets you run large datasets in memory
  • DDR5 4800 MT/s speed feeds data to the CPU at rated bandwidth
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 10 V operation matches the motherboard's memory-controller spec
  • 288-pin RDIMM form factor fits the ASRock Rack GENOAD12M3-2Q exactly

Server Memory Upgrade

This 128GB DDR5 RDIMM delivers registered ECC memory for the ASRock Rack GENOAD12M3-2Q motherboard. It operates at 4800MHz with CL40 latency and 1.1V, using a 2Rx4 rank configuration that matches the board's memory controller requirements. The 288-pin form factor ensures physical compatibility with the server platform.

Replacing Standard DIMMs

The registered architecture offloads the memory controller so every slot runs fully populated at rated capacity, while ECC corrects single-bit errors on the fly to prevent silent data corruption. This module replaces unbuffered or non-ECC memory that cannot sustain full-slot populations or provide error correction for production workloads. The jump is worth it when uptime and data integrity outweigh the cost of consumer-grade alternatives.

Installation Notes

The 288-pin RDIMM seats directly into the motherboard's DDR5 slots following the manual's population order. No heat spreader is present, so airflow clearance is standard for the chassis. What usually goes wrong is ignoring the board's approved DIMM sequence or mixing ranks, which prevents the system from recognising the full 128GB capacity at 4800MHz.

How it compares

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

Price $3,618.99
Pricier than about 75% 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 $28.27 per GB
Pricier than about 79% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K1
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
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Rack
In the box
Included items128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Does the 288-pin RDIMM fit the ASRock Rack GENOAD12M3-2Q motherboard?

Yes, this 288-pin DDR5 RDIMM is verified for the ASRock Rack GENOAD12M3-2Q motherboard and matches the required registered form factor.

What is the correct installation order for the 2Rx4 modules?

Follow the motherboard manual for the approved DIMM population sequence; install each module until the retention clips click securely on both ends.

When should the 128GB ECC RDIMM be replaced?

Replace the module if ECC logs show recurring correctable errors or if the system reports uncorrectable memory failures during operation.

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