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Single green 288-pin DDR5 RDIMM module, no heat spreader, black chips on both sides

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM ASRock W790 WS

SKU CH-0X2Y-MAPHJ

128GB DDR5 4800 ECC registered RDIMM with CL40 latency and 1.1V operation for ASRock W790 WS workstations

  • Capacity128GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 128GB

Show 3 more configurations
  • 128 GB single module simplifies capacity scaling
  • DDR5 4800 speed handles heavy workloads
  • CL40 latency at 1.1 V keeps power low
  • ECC registered design protects data integrity
  • 288-pin RDIMM fits ASRock W790 WS motherboard

128GB DDR5 4800 ECC RDIMM for ASRock W790 WS

This single 128GB registered DIMM operates at 4800MT/s with CL40 latency and 1.1V. It uses a 4Rx4 organisation and 288-pin DDR5 form factor for the ASRock W790 WS workstation motherboard. ECC and registered buffering protect data integrity in demanding workloads.

Suited for memory expansion on the ASRock W790 WS

Buyers needing ECC RDIMM modules validated for this specific motherboard can use this part. Builders who require non-ECC memory, unbuffered DIMMs, or a different pin count should look elsewhere. Systems that do not support registered DDR5 cannot accept this module.

The registered ECC design decides fit

Registered buffering and ECC are mandatory for the target workstation platform. If the motherboard or CPU memory controller does not support registered DDR5 with ECC, this DIMM will not function. Verify that the platform requires registered ECC RDIMMs before purchasing.

Highlights

  • 128 GB single module simplifies capacity scaling
  • DDR5 4800 speed handles heavy workloads
  • CL40 latency at 1.1 V keeps power low
  • ECC registered design protects data integrity
  • 288-pin RDIMM fits ASRock W790 WS motherboard

Specifications

BrandNEMIX RAM
SeriesASRock Server Motherboard Compatible Series Memory
ModelASRock DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K1
Capacity128GB
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 Content128GB (1X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How can I confirm the module is running at CL40 after installation?

Enter the BIOS or use a tool such as CPU-Z to verify the reported CAS latency matches CL40 and that the operating voltage reads 1.10 V.

What is included in the package and do I need any extra parts?

The box contains one 128 GB 288-pin DDR5 RDIMM; no additional cables, brackets or heat spreaders are required for installation.

Which capacity should I choose for the ASRock W790 WS workstation?

This kit provides a single 128 GB registered ECC module designed for the W790 WS platform; select it when you need maximum capacity per slot.

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