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Two green 288-pin DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 6400 ECC RDIMM 256GB 2x128GB CL52 1.1V 2Rx4 memory upgrade

SKU CH-N930-9ZRQ2

256 GB DDR5 registered ECC server memory kit with two 128 GB modules at 6400 MHz, CL52, 1.1 V, 2Rx4, 288-pin RDIMM for ASRock Rack GNRAP2D24G-2L+ motherboards

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 2X128GB

Show 4 more
  • 256 GB total capacity in a 2 x 128 GB kit for maximum server density
  • DDR5-6400 speed with CL52 latency delivers rated throughput out of the box
  • Registered ECC architecture offloads the controller and corrects single-bit errors
  • 1 V operating voltage matches the motherboard specification exactly
  • 288-pin RDIMM form factor verified for ASRock Rack GNRAP2D24G-2L+

Exact-match DDR5 server kit

This NEMIX RAM kit delivers 256GB as two 128GB DDR5-6400 RDIMMs built to the PC5-51200 standard. Each module is a 2Rx4 registered ECC DIMM running at 1.1V with CL52 timing, matching the memory controller requirements of the target platform so the full capacity is recognised at rated speed.

ASRock Rack GNRAP2D24G-2L+ builders

The 288-pin registered form factor fits only motherboards that require RDIMMs and follow the same population rules as the ASRock Rack GNRAP2D24G-2L+. Systems needing unbuffered UDIMMs, SODIMMs or a different pin count cannot use this kit and should look for memory specified for those architectures.

256GB registered ECC headroom

Two ranks per module and on-die ECC let a fully populated server chassis run large virtualisation, database or analytics workloads without silent data corruption. The fixed 256GB ceiling means clusters that scale beyond this capacity per node will need additional DIMM slots or higher-density modules not provided here.

How it compares

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

Price $8,100.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.64 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 numberMR51200-724K2
Total capacity256 GB (2 × 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 items256 GB 2 × 128 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

Does my server need an ASRock Rack GNRAP2D24G-2L+ motherboard to use this 256GB DDR5 6400 kit?

Yes, this 2Rx4 registered ECC kit is verified for the ASRock Rack GNRAP2D24G-2L+ motherboard and requires its 288-pin RDIMM slots and DDR5 6400 memory controller.

Can I mix these 128GB 2Rx4 RDIMMs with smaller DDR5 modules already installed?

Mixing different capacities or ranks is not recommended; the motherboard's population rules expect matched 2Rx4 modules for full-speed operation at 6400MHz.

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

Enter the BIOS and verify the memory frequency reads 6400MHz with CAS latency 52, and that the full 256GB is reported without errors.

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