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Two green DDR5 RDIMM modules without heat spreaders, 288-pin, 128GB kit

NEMIX RAM

NEMIX RAM DDR5 6400 ECC Registered RDIMM 128GB 2x64GB memory upgrade

SKU CH-P2WZ-RGM79

Adds 128 GB of registered DDR5 ECC memory in a two-module kit running at 6400 MHz with CL52 latency and 1.1 V for the ASRock Rack GNRAP2D24G-2L+ motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

Show 4 more
  • Full 128 GB capacity recognised at rated DDR5-6400 speed
  • Registered ECC architecture corrects single-bit errors automatically
  • 1 V operation matches server memory-controller requirements
  • 2Rx4 dual-rank layout enables full-slot population
  • Verified fit for ASRock Rack GNRAP2D24G-2L+ motherboard

128GB DDR5-6400 Registered ECC Kit

This 128GB kit contains two 64GB DDR5 RDIMMs rated at 6400MHz PC5-51200 with CL52 latency and 1.1V operation. The modules use a 2Rx4 registered design with ECC for error correction. They are built as an exact-match upgrade for the ASRock Rack GNRAP2D24G-2L+ motherboard. The 288-pin form factor fits the server board's DDR5 RDIMM slots.

Suited For Verified Server Platforms

This memory serves administrators upgrading or populating the ASRock Rack GNRAP2D24G-2L+ motherboard where registered ECC DDR5 is required. Builders needing unbuffered UDIMMs, SODIMMs, or non-ECC modules for workstation or consumer boards cannot use this kit. Systems that do not support 2Rx4 registered DIMMs or the DDR5-6400 speed grade should select different memory.

2Rx4 Registered ECC Architecture

The dual-rank registered layout with on-die ECC allows full-capacity population across all slots while offloading the memory controller. This specific 2Rx4 organization and 1.1V voltage must match the motherboard's qualified vendor list for stable operation at the rated 6400MHz speed.

How it compares

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

Price $4,455.99
Pricier than about 78% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $34.81 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 numberMR51200-924K2
Total capacity128 GB (2 × 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 items128 GB 2 × 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

Will the 288-pin DDR5 RDIMM modules fit the ASRock Rack GNRAP2D24G-2L+ motherboard?

Yes, the 288-pin Registered DDR5 RDIMM form factor matches the slots on the ASRock Rack GNRAP2D24G-2L+ motherboard and the kit is verified for that platform.

What is the correct installation order for the two 64 GB modules on this motherboard?

Install the two 64 GB modules in the DIMM slots specified by the ASRock Rack GNRAP2D24G-2L+ manual; the board's population rules dictate which channels must be filled first for the 128 GB kit to be recognised at full speed.

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

Registered architecture offloads the memory controller and on-die ECC corrects single-bit errors, lowering the chance of silent data corruption and unplanned reboots over the module's service life.

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