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Green rectangular circuit board with gold contacts and black memory chips, 288-pin DDR4 ECC registered DIMM

OWC

OWC 16GB DDR4 2666MHz ECC Registered RDIMM for Lenovo ThinkSystem Xeon SP Gen 1 SR550 SR570 SR590 SR630 SR650

SKU CH-C03V-PFYJ9

16 GB DDR4 ECC registered RDIMM running at 2666 MHz for Lenovo ThinkSystem SR550, SR570, SR590, SR630 and SR650 servers

  • Capacity16GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 16 GB capacity adds headroom for virtualization workloads
  • DDR4 2666 MHz CL19 delivers responsive server performance
  • ECC registered design protects data integrity in critical tasks
  • Validated for ThinkSystem SR550 SR570 SR590 SR630 SR650
  • 2 V operation reduces power draw per module

Server ECC RDIMM for Lenovo ThinkSystem

This OWC 16GB DDR4 2666MHz registered DIMM is built for Lenovo ThinkSystem servers based on Xeon SP Gen 1 platforms. It targets administrators who need to expand memory in SR550, SR570, SR590, SR630 or SR650 chassis. The module is new and carries OWC part number 2R6D42R816GB.

Registered ECC with CL19 latency

The single specification that decides fit is the registered ECC design combined with CL19 timing at 1.2V. This module will not work in standard desktop boards or in systems that require unbuffered memory. It replaces Lenovo part numbers 01AG618, 4X70P98202 and 7X77A01303 and runs at 2666MHz with backward compatibility to 2133MHz and 2400MHz speeds.

Tool-free slot installation

Installation is a standard DIMM slot procedure: align the 288-pin key, press until the latches click, and verify seating. The most common error is mixing this registered RDIMM with unbuffered modules, which prevents the system from posting. Ensure all populated slots use identical registered ECC specifications.

Highlights

  • 16 GB capacity adds headroom for virtualization workloads
  • DDR4 2666 MHz CL19 delivers responsive server performance
  • ECC registered design protects data integrity in critical tasks
  • Validated for ThinkSystem SR550 SR570 SR590 SR630 SR650
  • 2 V operation reduces power draw per module

Specifications

BrandOWC
Part Number2R6D42R816GB
Capacity16GB
Type288-Pin DDR4 ECC RDIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.2V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx8
Heat SpreaderNo
Compatible SystemLenovo ThinkSystem (Xeon SP Gen 1) SR550
Lenovo ThinkSystem (Xeon SP Gen 1) SR570
Lenovo ThinkSystem (Xeon SP Gen 1) SR590
Lenovo ThinkSystem (Xeon SP Gen 1) SR630
Lenovo ThinkSystem (Xeon SP Gen 1) SR650

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Questions about this item

What does the 2666MHz speed mean once this module is installed in a ThinkSystem server?

The module will run at up to 2666MHz CL19; if the server platform or other installed DIMMs operate at a lower speed such as 2133MHz or 2400MHz, this module will downclock automatically to match.

How does the DDR4 288-pin RDIMM interface affect compatibility with these Lenovo models?

The 288-pin registered ECC RDIMM form factor is required by the SR550, SR570, SR590, SR630 and SR650 Xeon SP Gen 1 platforms; it cannot be used in systems that take unbuffered UDIMMs.

What physical slot and clearance does this 16GB stick need to fit in the SR650?

It occupies a single 288-pin DDR4 DIMM slot and has no heat spreader, so it fits the standard server memory sockets in the SR650 without additional clearance concerns.

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