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Green rectangular circuit board with gold edge connectors and black memory chips on both sides

OWC

OWC 16GB DDR3 1600 ECC Registered RDIMM memory upgrade for HP Z820

SKU CH-CK3F-9RTC7

16 GB DDR3 ECC registered RDIMM running at 1600 MHz for HP Z820 workstations

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

Capacity 16GB

  • 16 GB DDR3 1600 ECC registered module boosts Z820 workstation capacity
  • CL11 latency at 1.5 V delivers stable registered performance for server workloads
  • 2Rx4 240-pin RDIMM form factor fits Z820 memory slots exactly
  • Replaces HP part numbers 672612081 672612181 672631B21 672633B21 684031001 684066B21 687465001 A2Z52AA
  • JEDEC compliant DDR3 PC3-12800 design ensures reliable long-term operation

HP Z820 memory upgrade

This 16GB DDR3 ECC registered RDIMM is built for the HP Workstation Z820. It runs at 1600MHz with CL11 latency and 1.5V operation. The 240-pin module uses 2Rx4 organisation and has no heat spreader. It replaces several original HP part numbers for direct compatibility.

Workstations and servers only

Suits administrators extending the life of a Z820 or populating empty slots with validated ECC registered memory. Buyers who need unbuffered modules for standard desktops cannot use this part. Systems that require mixed ranked or non-ECC memory should look elsewhere.

ECC registered DDR3 requirement

The single specification that decides fit is the ECC registered DDR3 1600MHz 240-pin form factor. Only platforms that explicitly support registered ECC DDR3 at this speed and pin count will accept the module.

Highlights

  • 16 GB DDR3 1600 ECC registered module boosts Z820 workstation capacity
  • CL11 latency at 1.5 V delivers stable registered performance for server workloads
  • 2Rx4 240-pin RDIMM form factor fits Z820 memory slots exactly
  • Replaces HP part numbers 672612081 672612181 672631B21 672633B21 684031001 684066B21 687465001 A2Z52AA
  • JEDEC compliant DDR3 PC3-12800 design ensures reliable long-term operation

Specifications

BrandOWC
Part Number1R6D32R416GB
Capacity16GB
Type240-Pin DDR3 ECC RDIMM
SpeedDDR3 1600 (PC3 12800)
CAS LatencyCL11
Voltage1.5V
ECCYes
Buffered/RegisteredRegistered
Rank2Rx4
Heat SpreaderNo
Compatible SystemHP Workstation Z820

Other versions of this model

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Questions about this item

How many ranks does the 16GB DDR3 1600 module present to the memory controller?

The module is organised as 2Rx4, so it presents two ranks per DIMM.

Does the registered ECC design add noticeable heat or fan noise inside a Z820 running 24/7?

Registered DIMMs run at standard 1.5 V without a heat spreader, so thermal load matches other DDR3-1600 modules in the chassis.

Which HP Z820 part numbers does this OWC module replace?

It replaces HP part numbers 672612081, 672612181, 672631B21, 672633B21, 684031001, 684066B21, 687465001 and A2Z52AA.

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