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

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.