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Two green DDR3 ECC RDIMM sticks, no heat spreader

OWC

OWC 16GB (2x8GB) DDR3 1600 ECC Registered RDIMM HP Z820

SKU CH-DRA2-3SZRT

16 GB dual-channel DDR3-1600 ECC registered RDIMM kit for HP Z820 workstations

  • Capacity16GB (2 x 8GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes

Capacity 16GB (2 x 8GB)

  • ECC registered design prevents data corruption in critical workloads
  • 16 GB dual-channel kit (2 × 8 GB) expands Z820 capacity
  • DDR3 1600 CL11 matches factory speed for stable operation
  • 5 V JEDEC voltage ensures broad workstation compatibility
  • Replaces nine HP part numbers for straightforward upgrades

Targeted Workstation Upgrade

This OWC kit supplies 16GB of DDR3 ECC Registered memory in two 8GB modules rated at 1600MHz with CL11 latency. It is built specifically for the HP Workstation Z820 and replaces a range of original HP part numbers. The modules run at 1.5V and use a 240-pin RDIMM form factor with 1Rx4 organisation.

Not for Standard Desktops

This memory suits administrators extending the life of a Z820 workstation or server infrastructure that requires registered ECC DIMMs. It will not work in standard desktop computers that accept only unbuffered non-ECC modules, and it cannot be mixed with unbuffered memory in the same system.

Straightforward Module Installation

Installation follows the usual DIMM slot procedure for the Z820: power down, open the chassis, align the notch on each 240-pin module, and press firmly until the retention clips engage. The most common issue is attempting to install these registered DIMMs in a platform that expects unbuffered memory, which prevents the system from posting.

Helstu kostir

  • ECC registered design prevents data corruption in critical workloads
  • 16 GB dual-channel kit (2 × 8 GB) expands Z820 capacity
  • DDR3 1600 CL11 matches factory speed for stable operation
  • 5 V JEDEC voltage ensures broad workstation compatibility
  • Replaces nine HP part numbers for straightforward upgrades

Tæknilýsing

BrandOWC
Part Number1R6D31R4016P
Capacity16GB (2 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

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Does my HP Z820 need to support DDR3 1600 ECC Registered RDIMM modules for this kit to work?

Yes, the Z820 must accept DDR3 1600 PC3-12800 CL11 1.5 V ECC Registered 240-pin RDIMMs; this kit will not work in systems that only take unbuffered or non-ECC memory.

Can I keep my existing HP Z820 memory and add this 16 GB kit alongside it?

You can add this kit if the Z820 has free 240-pin slots and the installed modules are also DDR3 1600 ECC Registered; mixing with unbuffered DIMMs is not supported.

How do I confirm the Z820 recognises both 8 GB modules at 1600 MHz after installation?

Check the BIOS memory summary or the operating system memory report — both should show 16 GB total running at DDR3 1600 with ECC active.

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