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Green 288-pin DDR4 ECC registered DIMM module with black chips

OWC

OWC 32GB DDR4 2666MHz ECC Registered RDIMM Memory Upgrade for Lenovo ThinkStation P720 P920

SKU CH-FZDK-ZSYEM

32GB DDR4 2666MHz ECC registered RDIMM for Lenovo ThinkStation P720 and P920 workstations

  • Capacity32GB
  • Type288-Pin DDR4 ECC RDIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.2V
  • ECCYes
  • 32 GB capacity expands workstation memory for larger datasets
  • ECC registered design detects and corrects single-bit errors for data integrity
  • 2666 MHz DDR4 speed with CL19 latency matches system specifications
  • 2 V operation reduces power draw compared to higher-voltage modules
  • Compatible with Lenovo ThinkStation P720 and P920 replacing part numbers 4X70P98203 and 7X77A01304

32GB DDR4 ECC Registered Upgrade

This 32GB DDR4 2666MHz ECC Registered RDIMM from OWC is built for Lenovo ThinkStation P720 and P920 workstations. It delivers 32GB of capacity at PC4-21300 speed with CL19 latency and 1.2V operation. The module uses a 288-pin registered design with 2Rx4 organisation for server-class reliability.

Workstations needing registered ECC

Suited for ThinkStation P720 and P920 owners who require registered ECC memory for error correction and system stability. Not for standard desktop PCs or consumer motherboards that accept only unbuffered non-ECC modules. Cannot be mixed with unbuffered memory in the same system.

Registered ECC RDIMM form factor

The decisive specification is the registered ECC RDIMM form factor with 288 pins and 1.2V DDR4 signalling. This module fits only platforms that support registered ECC DDR4; it will not work in slots wired for unbuffered or non-ECC memory.

Highlights

  • 32 GB capacity expands workstation memory for larger datasets
  • ECC registered design detects and corrects single-bit errors for data integrity
  • 2666 MHz DDR4 speed with CL19 latency matches system specifications
  • 2 V operation reduces power draw compared to higher-voltage modules
  • Compatible with Lenovo ThinkStation P720 and P920 replacing part numbers 4X70P98203 and 7X77A01304

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 ThinkStation P720
Lenovo ThinkStation P920

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Questions about this item

Does my Lenovo ThinkStation P720 or P920 need to support ECC Registered DDR4 RDIMMs for this 32GB module to work?

Yes, the module is a 288-pin DDR4 ECC Registered RDIMM and will only function in systems that accept registered ECC memory; standard desktop boards cannot use it.

Can I add this 2666MHz CL19 1.2V module alongside existing 2133MHz or 2400MHz ECC Registered DIMMs in my ThinkStation?

The module is backward compatible with 2133MHz and 2400MHz speeds, so it will run at the speed of the slowest installed DIMM when mixed with slower registered ECC memory.

How can I confirm the 32GB 2Rx4 module is detected at 2666MHz with ECC active after installation?

Check the system BIOS or UEFI memory information screen; it should show 32GB, 2666MHz (PC4-21300), CL19, 1.2V, and ECC Registered status for the installed slot.

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