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Four green DDR3 ECC registered RDIMM modules in a row

OWC

OWC 64GB (4x16GB) DDR3 1600 ECC Registered RDIMM memory upgrade for HP Z820

SKU CH-2NK2-KFSEE

Four-module 64 GB DDR3-1600 ECC registered kit for HP Z820 workstations

  • Capacity64GB (4 x 16GB)
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes

Capacity 64GB (4 x 16GB)

  • ECC registered design protects data integrity in workstations
  • 64GB kit with four 16GB modules maximises Z820 capacity
  • DDR3 1600 CL11 at 1.5V matches factory specifications
  • 240-pin RDIMM form factor installs directly in HP Z820 slots
  • Replaces HP part numbers including 672612081 and 687465001

HP Z820 64GB ECC RDIMM kit

This kit supplies 64 GB of DDR3 1600 registered ECC memory in four 16 GB modules built for the HP Z820 workstation. It targets IT professionals and power users who need error-correcting capacity for virtualization, rendering or scientific workloads on this platform.

Thermals noise and power

Each module runs at 1.5 V with CL11 latency and no heat spreader, so power draw and acoustics stay at standard DDR3 registered DIMM levels inside the Z820 chassis. The registered buffer adds minimal overhead while maintaining signal integrity across all populated slots.

Upgrade scope and limits

The kit replaces HP part numbers 672612081, 672612181, 672631B21, 672633B21, 684031001, 684066B21, 687465001 and A2Z52AA for a direct capacity increase. It is not for standard desktops or systems that require unbuffered non-ECC memory.

Privalumai

  • ECC registered design protects data integrity in workstations
  • 64GB kit with four 16GB modules maximises Z820 capacity
  • DDR3 1600 CL11 at 1.5V matches factory specifications
  • 240-pin RDIMM form factor installs directly in HP Z820 slots
  • Replaces HP part numbers including 672612081 and 687465001

Specifikacijos

BrandOWC
Part Number1R6D32R4064S
Capacity64GB (4 x 16GB)
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemHP Workstation Z820

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How do I install the four 16 GB DDR3 1600 RDIMMs in an HP Z820, and what step do people often get wrong?

Power off the workstation, open the chassis, and seat each 240-pin module in the matched channel slots shown in the service guide; the common mistake is mixing these registered DIMMs with any unbuffered memory already in the system.

What maintenance or replacement will the 64 GB ECC registered kit need over time?

No routine maintenance is required; if a module fails the limited lifetime advanced-replacement program covers a direct swap, otherwise the DIMMs run for the usable life of the Z820.

What limit appears first when the four 16 GB RDIMMs run sustained workloads on the Z820?

The memory controller caps throughput at DDR3 1600 PC3-12800, so bandwidth saturates before the 64 GB capacity or the 1.5 V thermal envelope becomes a bottleneck.

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