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Two green DDR5 ECC registered DIMMs with gold contacts

OWC

OWC 64GB (2×32GB) DDR5 4800 CL40 ECC RDIMM ThinkSystem SR635 V3 SR645 V3 SR650 V3 SR655 V3 SR665 V3

SKU CH-3V8A-9C9CN

Dual 32 GB DDR5 4800 CL40 ECC registered RDIMMs at 1.1 V for ThinkSystem SR635 V3 SR645 V3 SR650 V3 SR655 V3 SR665 V3 servers

  • Capacity64GB (2 x 32GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 64GB (2 x 32GB)

  • ECC registered design protects data integrity in servers
  • DDR5 4800 speed with CL40 latency boosts throughput
  • 64GB kit uses two 32GB 2Rx8 modules for density
  • 1V operation reduces power draw under load
  • Validated for ThinkSystem SR635 V3 SR645 V3 SR650 V3 SR655 V3 SR665 V3

Server-Specific DDR5 ECC Kit

This 64GB kit contains two 32GB DDR5 4800 CL40 ECC Registered RDIMMs built for Lenovo ThinkSystem SR635 V3, SR645 V3, SR650 V3, SR655 V3 and SR665 V3 servers. It is designed for workloads that require error-correcting registered memory in those exact platforms.

Registered DDR5 Platform Limits

DDR5 Registered DIMMs operate at 1.1V and use a 288-pin interface that fits only server and workstation boards wired for registered memory. The modules will not work in consumer desktops, laptops or any system that expects unbuffered or load-reduced DIMMs. Mixing registered with other ECC types is not supported.

Two-Rank 32GB Module Density

Each 32GB module uses a 2Rx8 organisation, so the kit presents two dual-rank DIMMs to the memory controller. Buyers whose server configuration requires single-rank modules or a different total capacity should verify the platform’s supported rank structure before ordering.

Points forts

  • ECC registered design protects data integrity in servers
  • DDR5 4800 speed with CL40 latency boosts throughput
  • 64GB kit uses two 32GB 2Rx8 modules for density
  • 1V operation reduces power draw under load
  • Validated for ThinkSystem SR635 V3 SR645 V3 SR650 V3 SR655 V3 SR665 V3

Caractéristiques

BrandOWC
Part Number4R8D52R8064P
Capacity64GB (2 x 32GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem SR635 V3
Lenovo ThinkSystem SR645 V3
Lenovo ThinkSystem SR650 V3
Lenovo ThinkSystem SR655 V3
Lenovo ThinkSystem SR665 V3

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Questions sur cet article

Should I pick the 64GB kit or look for a different capacity for my ThinkSystem SR650 V3?

This kit provides 64GB total as two 32GB modules. The SR635 V3, SR645 V3, SR650 V3, SR655 V3 and SR665 V3 all accept this exact 2×32GB configuration.

What does the 4800 speed rating deliver inside a ThinkSystem SR645 V3?

The modules run at DDR5 4800 with CL40 latency and 1.1V. The registered ECC design keeps data integrity high under sustained server workloads on the SR645 V3.

Is the 288-pin RDIMM interface limited by the platform or the memory standard?

The 288-pin registered DDR5 interface follows JEDEC PC5-38400. The SR635 V3, SR645 V3, SR650 V3, SR655 V3 and SR665 V3 memory controllers set the practical ceiling at 4800 MT/s.

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