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Green bare DDR5 RDIMM circuit board with gold 288-pin edge connector and black memory chips

NEMIX RAM

NEMIX RAM 64GB DDR5 4800 2Rx4 CL40 1.1V ECC Registered RDIMM memory upgrade

SKU CH-T9NX-3A9W0

64 GB DDR5 RDIMM with ECC and registered buffering, 4800 MT/s CL40 at 1.1 V, 2Rx4 rank for full-capacity server slots

  • Capacity64GB
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.10V
  • ECCYes

Size 64GB

Show 4 more configurations
  • 64 GB capacity lets the server handle large workloads
  • DDR5 4800 speed with CL40 latency runs at rated performance
  • Registered ECC design corrects single-bit errors for data integrity
  • 2Rx4 organisation on 288-pin RDIMM matches the motherboard slot
  • 1 V operation keeps power draw low for dense configurations

Server-grade DDR5 RDIMM

This 64GB DDR5 module runs at 4800 MT/s with CL40 latency and 1.1V operation. It uses a 288-pin registered ECC design built for the ASRock Rack GENOA2D24G-2L+ motherboard. The 2Rx4 organisation matches the board's memory controller requirements exactly.

DDR5 platform constraints

DDR5 RDIMMs require a motherboard with registered DIMM slots and a memory controller that supports ECC and the specified voltage. Mixing unbuffered or non-ECC modules will prevent the system from posting. Population rules and maximum capacity per channel are defined by the motherboard manual, not the module itself.

2Rx4 registered ECC organisation

The dual-rank by-four configuration with on-die ECC determines whether the memory controller can address the full 64GB at rated speed. Systems expecting single-rank or x8 organisation may not recognise the capacity or may downclock the module. Verify the motherboard's qualified vendor list for this exact rank and width before purchase.

Highlights

  • 64 GB capacity lets the server handle large workloads
  • DDR5 4800 speed with CL40 latency runs at rated performance
  • Registered ECC design corrects single-bit errors for data integrity
  • 2Rx4 organisation on 288-pin RDIMM matches the motherboard slot
  • 1 V operation keeps power draw low for dense configurations

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR38400-924K1
Capacity64GB
Type288-Pin DDR5 RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemASRock Rack
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content64GB DDR5 4800MHz PC5-38400 2Rx4 1.1V 288-PIN ECC RDIMM KIT

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Questions about this item

Should I select the 64GB 2Rx4 module or a different capacity for my ASRock Rack GENOA2D24G-2L+?

Choose this 64GB 2Rx4 RDIMM when your motherboard manual lists 64GB registered DIMMs as supported and calls for the 2Rx4 organisation. The exact rank, voltage and timing match the board's qualified-vendor list so the module is recognised at full capacity and runs at its rated 4800 speed.

What does the DDR5 4800 rating mean once the module is installed in the server?

DDR5 4800 means the module operates at 4800 MT/s with CL40 latency at 1.10V. The registered buffer reduces electrical load on the memory controller, allowing full-speed operation even with every slot populated, while on-die ECC corrects single-bit errors before they reach the OS.

How does the 288-pin RDIMM interface and registered ECC design affect real-world limits?

The 288-pin RDIMM form factor fits only DDR5 registered DIMM slots; it will not work in UDIMM or SODIMM sockets. Registered buffering lets the memory controller drive maximum capacity per channel, and ECC provides single-bit error correction with detection of multi-bit faults, preventing silent data corruption in production workloads.

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