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Eight green circuit boards with gold contacts and black memory chips, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB 8x64GB DDR5 6400 CL52 2Rx4 1.1V ECC RDIMM memory upgrade

SKU CH-DK13-B1HST

Eight 64 GB DDR5 6400 CL52 ECC registered RDIMMs totalling 512 GB for the ASRock Rack GNR2D16-2T motherboard

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 512GB 8X64GB

Show 4 more
  • 512 GB total capacity from eight 64 GB modules
  • DDR5-6400 speed with CL52 latency at 1.10 V
  • Registered ECC design corrects single-bit errors automatically
  • 2Rx4 rank layout matches ASRock Rack GNR2D16-2T requirements
  • 288-pin RDIMM form factor fits server memory slots

512GB DDR5 ECC RDIMM Kit

This 512GB kit contains eight 64GB DDR5 6400 modules with CL52 latency, 1.1V operation and 2Rx4 registered ECC architecture. It is built for servers that require registered DIMMs and error-correcting memory at full population.

Suited for ASRock Rack GNR2D16-2T

The kit matches the motherboard's DDR5 6400 registered DIMM requirements and population rules. It is not for systems that accept only unbuffered UDIMMs, SODIMMs or non-ECC memory, nor for boards limited to lower capacities or slower speeds.

Eight Slots Fully Populated

Eight 64GB modules fill every slot on the supported board, delivering 512GB at the rated 6400 transfer rate with registered buffering and ECC active. Headroom ends when the platform's maximum DIMM count or total capacity is reached, or if a workload demands speeds beyond DDR5 6400.

How it compares

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

Price $16,289.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.82 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 numberMR51200-924K8
Total capacity512 GB (8 × 64 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 8 × 64 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

What motherboard must I already have for this 512GB DDR5 6400 CL52 ECC RDIMM kit to work?

The kit is verified for the ASRock Rack GNR2D16-2T motherboard that requires 288-pin registered DDR5 DIMMs at 1.1V.

How will these 2Rx4 registered ECC modules behave if I keep older DDR5 RDIMMs in the same server?

Mixing ranks or speeds can prevent the board from running at 6400 MT/s; populate all eight slots with this matched kit for full 512GB capacity and rated performance.

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

Check the BIOS memory information or OS tools such as dmidecode to see 6400 MT/s, CL52, 1.1V and ECC active across all 512GB.

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