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Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 6400 64GB (2x32GB) CL52 1.1V ECC Registered RDIMM memory upgrade

SKU CH-HAKX-Y0P8K

64 GB dual-channel DDR5-6400 kit with CL52, 1.1 V, ECC and registered buffering for ASRock Rack GENOA2D16NQM3-2Q

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 64GB 2X32GB

Show 4 more
  • Exact-match DDR5-6400 kit runs at rated speed on your ASRock Rack board
  • Registered ECC design corrects single-bit errors to prevent silent data corruption
  • 1Rx4 1.10 V modules let every slot populate fully without controller strain
  • 288-pin RDIMM form factor fits the GENOA2D16NQM3-2Q motherboard precisely
  • Lifetime replacement warranty plus free US-based technical support included

Purpose-built server memory

This 64GB kit delivers two 32GB DDR5 RDIMM modules rated at 6400MHz with CL52 latency and 1.1V operation. Registered ECC architecture ensures data integrity for the ASRock Rack GENOA2D16NQM3-2Q motherboard. The exact rank and timing match lets the memory controller recognise full capacity at rated speed.

Upgrade from unbuffered or slower DDR5

Replaces non-ECC UDIMMs or lower-speed registered kits that cannot meet the board’s population rules or error-correction needs. The jump is worth it when workloads demand full-slot population at 6400MHz without signal degradation. Systems requiring only consumer UDIMM form factors or speeds below PC5-51200 will not benefit.

Sustained load behaviour

Registered buffering offloads the memory controller so every slot stays stable at full capacity during continuous operation. ECC corrects single-bit errors on the fly, preventing silent corruption during long compute runs. Modules without heat spreaders rely on chassis airflow; verify your server’s cooling path matches sustained throughput requirements.

How it compares

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

Price $2,190.99
Pricier than about 70% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $34.23 per GB
Pricier than about 90% 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 numberMR51200-314K2
Total capacity64 GB (2 × 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 items64 GB 2 × 32 GB DDR5 6400 MHz PC5-51200 1Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the memory slots on my ASRock Rack GENOA2D16NQM3-2Q motherboard?

Yes, the kit uses the exact 288-pin Registered DIMM form factor that the GENOA2D16NQM3-2Q requires, so each module seats directly into the board's DDR5 RDIMM slots without adapters.

What is the correct installation order for the two 32 GB sticks on this board?

Consult the motherboard manual for the approved DIMM population sequence; the board's memory-controller rules dictate which slots must be filled first for the 64 GB kit to be recognised at full speed.

Does the registered ECC design reduce long-term maintenance compared with unbuffered memory?

Registered buffering offloads the memory controller and on-die ECC corrects single-bit errors automatically, lowering the chance of silent data corruption that would otherwise require troubleshooting or module replacement.

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