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Green rectangular DDR4 RDIMM with black chips and gold contacts

OWC

OWC 32GB DDR4 2666MHz ECC Registered RDIMM CL19 1.2V 288pin Lenovo ThinkSystem

SKU CH-WYCX-XCXRK

32 GB DDR4 ECC registered RDIMM at 2666 MHz CL19 for Lenovo ThinkSystem SR670, SR850, SR860, SR950 and ST550 servers

  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • ECC registered design protects data integrity in critical workloads
  • 32GB capacity at 2666MHz DDR4 speeds handles demanding server tasks
  • 2V operation reduces power draw and heat output
  • Validated for Lenovo ThinkSystem SR670, SR850, SR860, SR950 and ST550
  • Backward compatible with 2133MHz and 2400MHz DDR4 systems

Server ECC RDIMM for Lenovo ThinkSystem

This 32GB DDR4 2666MHz ECC Registered RDIMM is built for Lenovo ThinkSystem servers based on Xeon SP Gen 1 platforms. It targets administrators upgrading SR670, SR850, SR860, SR950 or ST550 systems that require registered error-correcting memory. Buyers needing unbuffered desktop DIMMs or non-ECC modules cannot use this product.

Verify registered ECC support and slot availability

Confirm the server accepts 288-pin DDR4 Registered ECC RDIMMs at 1.2V and that the memory controller supports CL19 timing. The module is dual-rank 2Rx4 and will not operate alongside unbuffered DIMMs. Check the system manual for maximum capacity per channel and approved population rules before ordering.

Replaces Lenovo part numbers 4X70P98203

The stick carries OWC's limited lifetime warranty with free technical support and an advanced replacement programme. No heat spreader is fitted, matching the original Lenovo specification. Backward compatibility with 2133MHz and 2400MHz bus speeds allows mixed-speed configurations where the platform permits.

Highlights

  • ECC registered design protects data integrity in critical workloads
  • 32GB capacity at 2666MHz DDR4 speeds handles demanding server tasks
  • 2V operation reduces power draw and heat output
  • Validated for Lenovo ThinkSystem SR670, SR850, SR860, SR950 and ST550
  • Backward compatible with 2133MHz and 2400MHz DDR4 systems

Specifications

BrandOWC
Part Number2R6D42R432GB
Capacity32GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem (Xeon SP Gen 1) SR670
Lenovo ThinkSystem (Xeon SP Gen 1) SR850
Lenovo ThinkSystem (Xeon SP Gen 1) SR860
Lenovo ThinkSystem (Xeon SP Gen 1) SR950
Lenovo ThinkSystem (Xeon SP Gen 1) ST550

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Questions about this item

Does the module ship alone or in a kit with extra parts?

You receive a single 32GB DDR4 2666MHz ECC Registered RDIMM; no cables, brackets or additional components are included.

Should I pick this 32GB stick or a different capacity for my ThinkSystem SR850?

This part number 2R6D42R432GB provides 32GB per slot; choose it when each DIMM slot must hold 32GB and the server supports Registered ECC DDR4.

What does the 2666MHz rating deliver inside a Lenovo ThinkSystem SR950?

The module runs at DDR4 2666 CL19 1.2V with backward compatibility to 2133MHz and 2400MHz speeds in the supported Xeon SP Gen 1 platforms.

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