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

NEMIX RAM

NEMIX RAM DDR5 6400 128GB (2x64GB) ECC RDIMM CL52 1.1V 2Rx4 ASRock Rack GNRAPD12DNO

SKU CH-9JFP-VW0R6

A 128GB kit of two 64GB DDR5 6400 registered ECC RDIMMs built for the ASRock Rack GNRAPD12DNO server motherboard

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 6400 (PC5 51200)
  • CAS LatencyCL52
  • Voltage1.10V
  • ECCYes

Size 128GB 2X64GB

Show 4 more configurations
  • Exact DDR5-6400 match runs at rated speed on ASRock Rack GNRAPD12DNO
  • 128 GB (2×64 GB) fills both channels for maximum throughput
  • Registered ECC corrects single-bit errors to prevent data corruption
  • 1 V operation reduces power draw in dense server configs
  • 2Rx4 dual-rank layout enables full-capacity population per slot

Exact-Match Server Upgrade

This NEMIX RAM kit delivers 128GB across two 64GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency at 1.1V. The 2Rx4 registered ECC modules are built to the precise rank, voltage and timing the ASRock Rack GNRAPD12DNO expects so the memory controller recognises full capacity at rated speed.

Sustained Load Stability

Registered buffering offloads the memory controller allowing every slot to remain fully populated at full capacity without signal degradation. On-die ECC corrects single-bit errors in real time preventing silent data corruption and unplanned reboots during continuous production workloads.

2Rx4 Rank Configuration

The dual-rank by four architecture is the single specification that determines whether this kit matches your board's population rules and memory-controller expectations. Verify your system manual for supported capacities and approved DIMM order before purchase.

Highlights

  • Exact DDR5-6400 match runs at rated speed on ASRock Rack GNRAPD12DNO
  • 128 GB (2×64 GB) fills both channels for maximum throughput
  • Registered ECC corrects single-bit errors to prevent data corruption
  • 1 V operation reduces power draw in dense server configs
  • 2Rx4 dual-rank layout enables full-capacity population per slot

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR51200-924K2
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 6400 (PC5 51200)
CAS LatencyCL52
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemASRock Rack
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content128GB 2X64GB DDR5 6400MHz PC5-51200 2Rx4 1.1V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

How much power does this 128GB DDR5 6400 ECC RDIMM kit draw when the server runs continuously?

Each module operates at 1.10V. The registered design reduces electrical load on the memory controller, helping keep system power draw stable during all-day operation.

What motherboard slot and memory type must my system already provide for this 2Rx4 registered kit to function?

The board needs 288-pin DDR5 RDIMM slots that support registered ECC memory and the PC5-51200 speed grade; UDIMM or SODIMM slots will not accept these modules.

Can I populate all memory channels on my ASRock Rack GNRAPD12DNO with this 6400MHz CL52 kit without down-clocking?

The kit is spec-matched to the GNRAPD12DNO's DDR5-6400 registered ECC requirements, so fully populated channels run at the rated 6400MHz CL52 without automatic speed reduction.

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