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Green circuit board with black memory chips, gold edge connector, no heat spreader

OWC

OWC 128GB DDR5 4800 CL40 4Rx4 ECC Registered RDIMM 1.1V server RAM

SKU CH-D36W-G96Z7

128 GB DDR5 ECC registered RDIMM running at 4800 MT/s with CL40 latency and 1.1 V operation

  • Capacity128GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes
  • 128GB capacity expands server memory headroom for large workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design detects and corrects errors to protect data integrity
  • 1V operation reduces power draw per module in dense configurations
  • JEDEC compliant ensures broad compatibility with qualified server platforms

Server-grade DDR5 ECC module

This 128GB OWC DDR5 RDIMM runs at 4800 MT/s with CL40 latency and 1.1V operation. It carries a 4Rx4 registered ECC design built for workstation and server platforms. The module matches Samsung part M321RAGA0B20-CWK for direct replacement use.

Straightforward DIMM installation

Align the 288-pin module with the registered DDR5 slot and press until the retention clips engage. No heat spreader is fitted, so clearance is minimal. The registered buffer and ECC logic require a compatible motherboard; standard desktop boards will not accept this memory type.

Suits registered ECC server builds

This module targets administrators upgrading or repairing JEDEC-compliant DDR5 servers that support 4Rx4 registered DIMMs. It will not work in consumer desktops, laptops, or systems requiring unbuffered or load-reduced memory. Buyers needing non-ECC or UDIMM form factors should look elsewhere.

Points forts

  • 128GB capacity expands server memory headroom for large workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design detects and corrects errors to protect data integrity
  • 1V operation reduces power draw per module in dense configurations
  • JEDEC compliant ensures broad compatibility with qualified server platforms

Caractéristiques

BrandOWC
Part Number4R8D54R4128G
Capacity128GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank4Rx4
Heat SpreaderNo

Questions sur cet article

How can I confirm the 128GB DDR5 4800 CL40 4Rx4 ECC Registered RDIMM is running at its rated speed after installation?

Enter the server BIOS or UEFI and check the memory information screen; it should report DDR5 4800 (PC5-38400) with CAS latency 40 and 1.1V operation for the installed module.

What is included with the OWC 128GB DDR5 4800 CL40 4Rx4 ECC Registered RDIMM and what must be purchased separately?

The box contains the single 288-pin 128GB DDR5 4800 CL40 4Rx4 1.1V ECC Registered RDIMM module; additional DIMMs for multi-channel population or higher total capacity are sold separately.

When should I choose this 128GB 4Rx4 DDR5 4800 CL40 Registered ECC module over other capacities or ranks?

Select this 128GB 4Rx4 Registered ECC DIMM when your server or workstation requires maximum capacity per slot at DDR5 4800 speed and the platform supports 4Rx4 registered memory.

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