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Two green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 64GB 2x32GB 6400MHz CL52 1.1V 1Rx4 ECC Registered RDIMM memory upgrade

SKU CH-5AVM-PDN6P

A 64GB kit of two 32GB DDR5-6400 registered ECC RDIMMs built for the ASRock Rack GNR2D16-2T motherboard

  • 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
  • 64 GB dual-channel capacity from two 32 GB modules
  • DDR5-6400 speed with CL52 latency for rated throughput
  • Registered ECC design corrects single-bit errors on the fly
  • 10 V operation at 1Rx4 rank matches controller expectations
  • 288-pin RDIMM form factor verified for ASRock Rack GNR2D16-2T

Exact-fit server upgrade

This 64 GB kit delivers two 32 GB DDR5 6400 MHz modules built to the precise 1Rx4 Registered ECC specification your ASRock Rack GNR2D16-2T motherboard expects. Each DIMM operates at 1.1 V with CL52 timing so the memory controller recognises full capacity and rated speed without manual tuning.

Registered ECC stability

The 288-pin RDIMM form factor uses a registered architecture that buffers address and command signals, allowing every slot to stay fully populated at full frequency. On-die ECC detects and corrects single-bit errors in flight, preventing silent data corruption and unplanned reboots in production workloads.

Replaces mismatched or slower memory

When existing modules run at a lower data rate, use mixed ranks, or lack error correction, this kit restores the platform's validated configuration. The jump is worth it whenever capacity must scale to 64 GB per channel while maintaining registered ECC integrity at DDR5 6400 speeds.

How it compares

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

Price $2,629.99
Pricier than about 71% 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 $41.09 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 numberMR51200-314K2
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

What speed does the DDR5 6400 interface actually run at on the ASRock Rack GNR2D16-2T?

The kit operates at DDR5 6400 (PC5-51200) with CL52 latency at 1.1 V, matching the motherboard's rated memory speed.

Will these 288-pin RDIMMs fit the ASRock Rack GNR2D16-2T motherboard slots?

Yes, the 288-pin Registered RDIMM form factor is exactly what the GNR2D16-2T requires; UDIMMs or SODIMMs will not fit.

Which DIMM slots should I populate first when installing this 2x32 GB kit?

Follow the motherboard manual's population order; the kit's 1Rx4 registered design allows full-capacity operation when slots are filled per the board's rules.

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