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Four green DDR3 ECC registered DIMMs in anti-static packaging

OWC

OWC 32GB (4x8GB) DDR3 1600 ECC Registered RDIMM for HP Z820

SKU CH-CGYH-K0WPG

ECC registered DDR3 kit adds 32 GB across four 8 GB modules at 1600 MHz for the HP Z820 workstation

  • Capacity32GB (4 x 8GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes

Capacity 32GB (4 x 8GB)

  • ECC registered design protects data integrity in workstations
  • 32 GB kit (4 × 8 GB) expands Z820 memory capacity
  • DDR3 1600 CL11 matches HP Z820 specifications
  • 5 V operation meets original voltage requirements
  • Replaces multiple HP part numbers for direct compatibility

HP Z820 ECC Registered Memory Kit

This 32GB kit contains four 8GB DDR3 1600 ECC Registered RDIMMs built for the HP Workstation Z820. It targets professionals who need error-correcting, registered memory to keep ageing workstation infrastructure running reliably.

Installation notes for 240-pin RDIMMs

Modules insert into the 240-pin DDR3 slots like standard DIMMs, but the registered buffer adds a slight height profile that can touch oversized CPU coolers. The most common error is mixing these registered sticks with unbuffered memory, which the platform will not support.

Verify your Z820 configuration before ordering

Confirm the workstation currently uses DDR3 ECC Registered memory and has four free slots for a matched quad-channel population. This kit will not work in standard desktop boards, consumer laptops or any system that requires unbuffered or non-ECC modules.

Highlights

  • ECC registered design protects data integrity in workstations
  • 32 GB kit (4 × 8 GB) expands Z820 memory capacity
  • DDR3 1600 CL11 matches HP Z820 specifications
  • 5 V operation meets original voltage requirements
  • Replaces multiple HP part numbers for direct compatibility

Specifications

BrandOWC
Part Number1R6D31R4032S
Capacity32GB (4 x 8GB)
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx4
Heat SpreaderNo
Compatible SystemHP Workstation Z820

Other versions of this model

4 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How can I verify the 32GB kit is running at DDR3 1600 CL11 with ECC registered operation after installing it in my Z820?

Enter the system BIOS or UEFI and confirm the memory speed shows 1600 MHz, CAS latency 11, voltage 1.5V, and that ECC and registered status are both reported as enabled for all four modules.

What exactly ships in the box and is any additional hardware required for installation?

The kit contains four 8GB DDR3 1600 PC3-12800 CL11 1Rx4 240-pin 1.5V ECC registered RDIMM modules; no extra cables, brackets or tools are needed for the Z820 DIMM slots.

Should I choose this 32GB 4x8GB kit or a different capacity for the HP Z820?

Select this 32GB kit when you need to populate four slots with matched 8GB registered ECC modules; choose another capacity only if your workload requires more or less total memory.

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