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Two green DDR5 ECC RDIMM sticks, 288-pin, no heat spreader

OWC

OWC 64GB (2x32GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-6H38-NXFP7

A 64 GB DDR5 4800 CL40 ECC registered DIMM kit for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 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
  • 1 V operation lowers power draw per module
  • 64 GB kit (2 × 32 GB) expands memory capacity
  • Validated for ThinkSystem SR675 V3 SR850 V3 SR860 V3 ST650 V3

Server ECC RDIMM Kit

This OWC kit provides 64GB of DDR5 ECC registered memory in two 32GB modules. It is built for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3 servers. The modules run at 4800 MT/s with CL40 latency at 1.1V. Buyers needing unbuffered desktop DIMMs or load-reduced memory cannot use this product.

Registered Upgrade Path

It replaces standard unbuffered or lower-capacity registered DIMMs in the supported ThinkSystem platforms. The jump is worthwhile when workloads demand ECC error correction and registered signalling for multi-DIMM stability. Mixing these modules with unbuffered or load-reduced memory is not supported and will prevent operation.

Tool-Free DIMM Installation

Each 288-pin module seats vertically in the server memory slots without tools. The keyed notch ensures correct orientation. The most common error is populating slots in the wrong sequence for the specific CPU configuration, which causes the system to halt at POST.

Ciri-ciri utama

  • ECC registered design protects data integrity in servers
  • DDR5 4800 speed with CL40 latency boosts throughput
  • 1 V operation lowers power draw per module
  • 64 GB kit (2 × 32 GB) expands memory capacity
  • Validated for ThinkSystem SR675 V3 SR850 V3 SR860 V3 ST650 V3

Spesifikasi

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 SR675 V3
Lenovo ThinkSystem SR850 V3
Lenovo ThinkSystem SR860 V3
Lenovo ThinkSystem ST650 V3

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Will the 288-pin RDIMM modules fit the DIMM slots on a ThinkSystem SR675 V3?

Yes, the 288-pin DDR5 RDIMM form factor matches the memory slots on the SR675 V3 and the other listed ThinkSystem models.

What is the correct installation sequence for the 2Rx8 registered modules in a ThinkSystem SR850 V3?

Populate the DIMM slots in the order specified by the SR850 V3 service guide, ensuring each 2Rx8 module clicks fully into the 288-pin socket; the common error is stopping before the retention clips lock.

When should the 1.1 V DDR5 ECC registered modules be replaced in a ThinkSystem ST650 V3?

Replace them if the system logs correctable ECC errors that exceed the platform threshold or if a module fails the built-in memory diagnostics during POST.

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