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Green circuit board with black memory chips and gold contacts

OWC

OWC 64GB DDR5 4800 ECC Registered RDIMM CL40 2Rx4 1.1V 288-pin SR950 V3

SKU CH-5D3G-7ATN7

A 64 GB DDR5 ECC registered RDIMM running at 4800 MT/s with CL40 latency for Lenovo ThinkSystem SR950 V3 servers

  • Capacity64GB
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 64GB

  • 64GB capacity expands server memory for demanding workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 1V operation reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem SR950 V3 compatibility

64GB DDR5 ECC RDIMM for SR950 V3

This 64GB DDR5 4800 module is a registered ECC RDIMM built for the Lenovo ThinkSystem SR950 V3. It operates at 1.1V with CL40 latency and a 2Rx4 rank configuration. The 288-pin form factor fits server and workstation platforms that require registered memory with error correction.

Replaces Lenovo 4X71M22550 and 4X77A series parts

The module directly replaces Lenovo part numbers 4X71M22550, 4X77A77032, 4X77A77033, 4X77A81441 and 4X77A81442. The upgrade is worth it when expanding capacity in an SR950 V3 or when a failed DIMM must be swapped with a JEDEC-compliant equivalent. It cannot be mixed with unbuffered or load-reduced ECC memory.

Suits SR950 V3 servers needing registered ECC

Buyers maintaining or expanding a ThinkSystem SR950 V3 with registered DDR5 will find this module compatible. It is not for desktop PCs, consumer workstations or any system that requires unbuffered or load-reduced DIMMs. Builders needing different capacities, speeds or form factors should look at other modules.

Ciri-ciri utama

  • 64GB capacity expands server memory for demanding workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 1V operation reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem SR950 V3 compatibility

Spesifikasi

BrandOWC
Part Number4R8D52R464GB
Capacity64GB
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem SR950 V3

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Does this 288-pin DDR5 RDIMM fit the memory slots of a Lenovo ThinkSystem SR950 V3?

Yes, the module is built to the 288-pin DDR5 RDIMM form factor specified for the ThinkSystem SR950 V3 and replaces Lenovo part numbers 4X71M22550, 4X77A77032, 4X77A77033, 4X77A81441 and 4X77A81442.

What is the correct way to install this registered ECC module and what step is often missed?

Power down the server, open the chassis, align the notch on the 288-pin edge connector with the slot key, press firmly until both retention clips click, then verify in the BIOS that the 64GB 2Rx4 module is recognised at 4800 MT/s with ECC active; the step often missed is confirming the ECC status after boot.

When will this 64GB DDR5 4800 CL40 1.1V module need replacement?

The module has no moving parts and is rated for continuous server operation; plan replacement only if memory diagnostics report correctable errors that exceed the platform threshold or when a capacity upgrade is required.

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