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Two green DDR5 ECC RDIMM sticks, no heat spreader

OWC

OWC 128GB (2x64GB) DDR5 4800 CL40 ECC RDIMM ThinkSystem

SKU CH-2V6G-9NJNB

128 GB dual-channel DDR5-4800 ECC registered server memory kit for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3

  • Capacity128GB (2 x 64GB)
  • Type288-Pin DDR5 ECC RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.1V
  • ECCYes

Capacity 128GB (2 x 64GB)

  • ECC registered design protects data integrity in critical workloads
  • 128 GB kit (2 × 64 GB) expands server memory capacity
  • DDR5 4800 CL40 at 1.1 V delivers high-speed low-power operation
  • Validated for ThinkSystem SR675 V3 SR850 V3 SR860 V3 ST650 V3
  • JEDEC and RoHS compliant for warranty-safe upgrades

Server memory upgrade kit

This OWC kit provides 128 GB of DDR5 ECC registered memory in two 64 GB modules. It is built for Lenovo ThinkSystem SR675 V3, SR850 V3, SR860 V3 and ST650 V3 servers that require registered DIMMs. The modules run at 4800 MT/s with a CAS latency of 40 at 1.1 V.

Build integration

Each stick is a 288-pin 2Rx4 RDIMM without a heat spreader, so it fits standard server DIMM slots. Registered buffering and on-die ECC protect data integrity in multi-socket platforms. The kit cannot be mixed with unbuffered or load-reduced modules, and it will not work in desktop or consumer workstation boards.

Upgrade context

The kit replaces smaller-capacity RDIMMs or fills empty slots to raise total system memory. It is suited for administrators extending the life of existing ThinkSystem V3 infrastructure or configuring new deployments. Buyers needing unbuffered ECC or higher-speed DDR5 grades should look elsewhere.

Puntos fuertes

  • ECC registered design protects data integrity in critical workloads
  • 128 GB kit (2 × 64 GB) expands server memory capacity
  • DDR5 4800 CL40 at 1.1 V delivers high-speed low-power operation
  • Validated for ThinkSystem SR675 V3 SR850 V3 SR860 V3 ST650 V3
  • JEDEC and RoHS compliant for warranty-safe upgrades

Especificaciones

BrandOWC
Part Number4R8D52R4128P
Capacity128GB (2 x 64GB)
Type288-Pin DDR5 ECC RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.1V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem SR675 V3
Lenovo ThinkSystem SR850 V3
Lenovo ThinkSystem SR860 V3
Lenovo ThinkSystem ST650 V3

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Preguntas sobre este artículo

How many DDR5 slots does the 128 GB kit fill in a ThinkSystem SR675 V3?

The kit provides two 64 GB modules, so it occupies two of the server's 288-pin DDR5 slots.

What is the typical power draw per module at the rated 1.1 V?

Each 64 GB RDIMM runs at the JEDEC-standard 1.1 V, keeping power draw low for continuous server operation.

Does the motherboard need to support ECC registered memory for this kit to work?

Yes, the modules are ECC registered (2Rx4) and require a platform that accepts registered DIMMs, such as the listed ThinkSystem models.

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