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Green rectangular DDR5 ECC RDIMM module with black chips, no heat spreader, 288 gold pins visible

OWC

OWC 64GB DDR5 4800 CL40 2Rx4 288-pin 1.1V ECC RDIMM memory upgrade

SKU CH-FDMS-005DK

64 GB DDR5 4800 ECC registered RDIMM for ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3 servers

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

Capacity 64GB

  • 64 GB capacity supports heavy virtualisation workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 1 V operation reduces power draw in dense server racks
  • Validated for Lenovo ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3

64 GB DDR5 ECC RDIMM for Lenovo ThinkSystem servers

This 64 GB DDR5 4800 CL40 module is a registered ECC RDIMM built for Lenovo ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3 servers. It operates at 1.1 V with a 2Rx4 organisation and fits the 288-pin DDR5 slot. The part replaces Lenovo numbers 4X71M22550, 4X77A77032, 4X77A77033, 4X77A81441 and 4X77A81442.

Suited for registered ECC server configurations only

It suits administrators expanding memory in the listed ThinkSystem platforms where registered ECC DDR5 is required. It will not work in standard desktop motherboards or consumer laptops that accept only unbuffered non-ECC memory. Buyers who need load-reduced ECC modules or unbuffered DIMMs should look at a different product line.

Single-module upgrade with no extra accessories

The package contains one 64 GB RDIMM and no heat spreader, cables, software or additional hardware. Installation is a direct DIMM swap in the compatible server chassis. The module meets JEDEC and RoHS standards, so the only change is the added registered ECC capacity.

Pontos fortes

  • 64 GB capacity supports heavy virtualisation workloads
  • DDR5 4800 speed delivers high bandwidth for data-intensive tasks
  • ECC registered design corrects errors to protect critical data
  • 1 V operation reduces power draw in dense server racks
  • Validated for Lenovo ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3

Especificações

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 SD650 V3
Lenovo ThinkSystem SD650-I V3
Lenovo ThinkSystem SD665 V3
Lenovo ThinkSystem SD665-N V3
Lenovo ThinkSystem SR630 V3

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Perguntas sobre este artigo

Which Lenovo ThinkSystem servers must I already own for this 64GB DDR5 4800 CL40 2Rx4 288-pin 1.1V ECC RDIMM to work?

This module is validated for Lenovo ThinkSystem SD650 V3, SD650-I V3, SD665 V3, SD665-N V3 and SR630 V3 servers.

Can I keep my existing 2Rx4 DDR5 4800 ECC RDIMMs and add this 64GB stick alongside them?

Yes, if the installed modules are also DDR5 4800 CL40 2Rx4 1.1V ECC Registered RDIMMs; mixing with unbuffered or load-reduced DIMMs is not supported.

How do I confirm the module is running at DDR5 4800 CL40 with ECC active after installation?

Check the server BIOS or management console — it should report 4800 MT/s, CL40 timings, 1.1 V and ECC Registered status for the new DIMM.

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