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Four green DDR5 RDIMM modules without heat spreaders, 288-pin, 512 GB kit

NEMIX RAM

NEMIX RAM 512GB 4x128GB DDR5 6400 CL52 2Rx4 ECC RDIMM for ASRock Rack GNRD16DNO GNRD16QM3-NL memory upgrade

SKU CH-6QQV-5HA43

A 512 GB kit of four 128 GB DDR5 6400 CL52 2Rx4 ECC registered RDIMMs at 1.1 V for ASRock Rack GNRD16DNO and GNRD16QM3-NL motherboards

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 4X128GB

Show 4 more
  • 512 GB total capacity from four 128 GB modules
  • DDR5 6400 speed with CL52 latency for rated performance
  • Registered ECC design corrects errors and supports full population
  • 1 V operation matches the server memory controller specification
  • 288-pin RDIMM form factor fits ASRock Rack GNRD16DNO and GNRD16QM3-NL

Targeted server upgrade

This 512GB kit delivers four 128GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1V operation. It is built for administrators expanding ASRock Rack GNRD16DNO or GNRD16QM3-NL systems that require registered ECC memory in a 288-pin form factor.

Thermals and power

Each module runs at the standard DDR5 voltage of 1.10V without a heat spreader, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, helping keep power draw predictable when all slots are populated.

Build integration

The 2Rx4 registered ECC design matches the motherboard's population rules so the system recognises the full capacity at rated speed. Buyers needing unbuffered UDIMMs, SODIMMs, or non-ECC modules should look elsewhere, as this kit fits only RDIMM slots with registered support.

How it compares

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

Price $17,363.99
Pricier than about 91% 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 $33.91 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 numberMR51200-724K4
Total capacity512 GB (4 × 128 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Rack
In the box
Included items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How do I install the four 288-pin RDIMMs in the ASRock Rack GNRD16DNO, and which slot order do people often get wrong?

Populate all four slots in the exact sequence listed in the motherboard manual; the board requires a specific DIMM population order for full 512 GB recognition at DDR5 6400.

What maintenance or replacement will the 2Rx4 registered ECC modules need over time?

No scheduled maintenance is required; ECC corrects single-bit errors on the fly, and the modules are covered by a lifetime replacement warranty if a fault ever develops.

What limit appears first when the kit runs at 6400 MT/s continuously under full load?

The memory controller's maximum supported speed of DDR5 6400 (PC5-51200) is the first ceiling; the modules operate at 1.1 V and CL52 within that rated envelope.

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