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Four green DDR5 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB 4x32GB DDR5 6400 CL52 1Rx4 1.1V ECC RDIMM ASRock Rack GENOA2D16NQM3-2Q memory upgrade

SKU CH-JZ30-0E2FZ

A 128 GB DDR5 ECC RDIMM kit built for the ASRock Rack GENOA2D16NQM3-2Q motherboard, running at 6400 MHz with CL52 latency and 1.1 V registered stability

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 4X32GB

Show 4 more
  • Full 128 GB capacity with four 32 GB DDR5 modules running at 6400 MT/s
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 1Rx4 rank and 1.1 V voltage match the ASRock Rack GENOA2D16NQM3-2Q memory controller exactly
  • 288-pin RDIMM form factor fits the motherboard's DDR5 slots without adapters
  • CL52 CAS latency delivers rated throughput for server workloads

Exact-match upgrade for ASRock Rack GENOA2D16NQM3-2Q

This 128GB kit contains four 32GB DDR5 6400 CL52 1Rx4 ECC Registered RDIMM modules built to the voltage and timing the motherboard expects. It is designed for servers and workstations that require registered ECC memory at full capacity. Builders who need UDIMM or SODIMM form factors cannot use this kit.

Straightforward DIMM installation

The 288-pin RDIMM modules seat in the standard DDR5 slots, but the board's manual dictates the exact population order for four modules. Skipping the approved sequence is the most common reason the system fails to recognise the full 128GB or defaults to a lower speed.

Registered ECC stability under sustained load

The registered buffer reduces electrical load on the memory controller, allowing all four slots to run at the rated 6400 MT/s continuously. ECC corrects single-bit errors in real time, preventing silent data corruption during long compute runs. Modules without heat spreaders rely on chassis airflow for thermal management.

How it compares

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

Price $4,712.99
Pricier than about 79% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $36.82 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR51200-314K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Rack
In the box
Included items128 GB 4 × 32 GB DDR5 6400 MHz PC5-51200 1Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How do I confirm the kit is running at DDR5 6400 CL52 after installation?

Enter the BIOS or UEFI and verify the memory speed reads 6400 MT/s with CAS latency 52; the registered ECC modules should also report 128 GB total across all four slots.

What comes in the box and do I need any extra parts?

The package contains the 128 GB kit as four 32 GB DDR5 288-pin RDIMMs; no heat spreaders or additional cables are included or required for installation.

Why choose the 1Rx4 1.1 V version over other DDR5 ECC RDIMM options?

This exact 1Rx4 registered ECC configuration at 1.1 V matches the ASRock Rack GENOA2D16NQM3-2Q motherboard's population rules, ensuring full-capacity recognition at the rated 6400 MT/s speed.

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