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Four green DDR5 RDIMM modules, bare circuit boards, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 ECC RDIMM CL40 1.1V ASRock WRX90 WS EVO memory upgrade

SKU CH-Y04Z-T4BPC

A 512 GB DDR5 ECC registered DIMM kit of four 128 GB modules at 4800 MT/s CL40, 1.1 V, validated for ASRock WRX90 WS EVO workstations

  • Capacity512GB (4 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 512GB 4X128GB

Show 3 more configurations
  • 512 GB total capacity scales memory-heavy workloads
  • DDR5 4800 speed feeds high-throughput server tasks
  • ECC registered design protects data integrity under load
  • 1 V operation reduces platform power draw
  • Four 128 GB modules fill quad-channel slots efficiently

Capacity and configuration

This is a 512GB kit built from four 128GB DDR5 modules. Each stick is a registered ECC RDIMM running at 4800MHz with a CL40 latency and 1.1V operation. The 4Rx4 organisation and 288-pin form factor target the ASRock WRX90 WS EVO workstation platform.

Workstation memory upgrade

The kit suits IT professionals expanding a compatible ASRock WRX90 WS EVO system for virtualization, rendering or large dataset workloads. It is not for consumer desktops that require unbuffered non-ECC memory or boards limited to lower capacities per slot.

Platform verification

Confirm the motherboard is the ASRock WRX90 WS EVO and that the BIOS revision supports 128GB registered DDR5 RDIMMs. Check that all four DIMM slots are free and that the CPU installed on the board enables the full eight-channel memory architecture.

Highlights

  • 512 GB total capacity scales memory-heavy workloads
  • DDR5 4800 speed feeds high-throughput server tasks
  • ECC registered design protects data integrity under load
  • 1 V operation reduces platform power draw
  • Four 128 GB modules fill quad-channel slots efficiently

Specifications

BrandNEMIX RAM
SeriesASRock Server Motherboard Compatible Series Memory
ModelASRock DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K4
Capacity512GB (4 x 128GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASRock
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content512GB (4X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

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Questions about this item

Will this 512GB kit install directly into my ASRock WRX90 WS EVO motherboard?

The kit is built for the ASRock WRX90 WS EVO motherboard and uses 288-pin DDR5 RDIMM modules that fit the board's memory slots.

Can I mix these 128GB 4Rx4 modules with smaller DDR5 ECC RDIMMs I already own?

Mixing different capacities or ranks is not recommended; the motherboard performs best when all slots are populated with identical 128GB 4Rx4 modules.

How can I verify the memory runs at 4800 MT/s with CL40 after installation?

Enter the BIOS or use a system-information tool to confirm the memory speed shows 4800 MT/s and the CAS latency reads CL40.

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