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Green rectangular DDR3 memory module with gold edge connector and black chips, no heat spreader

OWC

OWC 8GB DDR3 1600 CL11 ECC Registered RDIMM for HP Z820

SKU CH-WP77-G6RDB

Adds 8 GB of DDR3-1600 ECC registered memory to an HP Z820 workstation

  • Capacity8GB
  • Type240-Pin DDR3 ECC RDIMM
  • SpeedDDR3 1600 (PC3 12800)
  • CAS LatencyCL11
  • Voltage1.5V
  • ECCYes

Capacity 8GB

  • ECC registered design protects data integrity in workstations and servers
  • 8GB DDR3 1600 CL11 module upgrades HP Z820 memory capacity
  • 5V operation matches original system voltage requirements
  • 240-pin RDIMM form factor fits Z820 DIMM slots directly
  • Replaces multiple HP part numbers for straightforward compatibility

HP Z820 ECC RDIMM Upgrade

This 8GB DDR3 1600 CL11 module is built for the HP Workstation Z820. It targets administrators and engineers who need registered ECC memory to maintain data integrity in server or workstation workloads. The single rank 1Rx4 design fits the platform's qualified memory population rules.

Registered 240-Pin Build Quality

The module uses a 240-pin DDR3 form factor without a heat spreader, running at the standard 1.5V JEDEC voltage. Registered buffering reduces electrical load on the memory controller, allowing larger total capacities across the Z820's twelve DIMM slots. ECC circuitry detects and corrects single-bit errors during operation.

Replaces HP OEM Part Numbers

This unit replaces HP part numbers such as 647651081, 647651181, 647879B21, 647899B21, 647899B212, 664691001, 676333B21, 676490181, 676812001 and 687462001. The upgrade is worthwhile when expanding memory for virtualisation, large datasets or multi-user services where registered ECC is mandatory. It will not work in standard desktop boards that require unbuffered non-ECC DIMMs.

Ciri-ciri utama

  • ECC registered design protects data integrity in workstations and servers
  • 8GB DDR3 1600 CL11 module upgrades HP Z820 memory capacity
  • 5V operation matches original system voltage requirements
  • 240-pin RDIMM form factor fits Z820 DIMM slots directly
  • Replaces multiple HP part numbers for straightforward compatibility

Spesifikasi

BrandOWC
Part Number1R6D31R408GB
Capacity8GB
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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What DDR3 speed and latency does the 240-pin RDIMM run at?

The module operates at DDR3 1600 (PC3-12800) with CL11 latency and 1.5V voltage.

Does the 240-pin registered DIMM fit the HP Z820 workstation slots?

Yes, the 240-pin form factor matches the Z820 memory slots exactly.

How is the ECC registered module installed in the Z820?

Align the notch on the 240-pin RDIMM with the slot key, press down until the retention clips click, and ensure the registered module is not mixed with unbuffered DIMMs.

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