OWC 32GB (4x8GB) DDR3 1333 PC3-10600 CL9 2Rx4 240-pin 1.5V ECC Registered RDIMM Memory Upgrade Kit

Server memory kit

This OWC kit supplies 32GB of DDR3 ECC registered memory across four 8GB modules. It targets administrators upgrading HP ProLiant blade servers that require registered DIMMs with error correction. The modules will not work in standard desktop platforms or alongside unbuffered memory.

240-pin registered DIMMs

Each stick uses a 240-pin DDR3 interface at 1.5V with CL9 latency and a 2Rx4 organisation. The registered design adds a buffer that reduces electrical load on the server memory controller, allowing the full kit to populate compatible blade slots without signal integrity issues. No heat spreaders are fitted, so airflow in the chassis handles cooling.

HP part-number match

The kit replaces HP part numbers including 500205071, 500205171, 500206071, 500662B21, 501536001, 593913B21, A0R56A, FX622AA and FX622UT. Buyers can therefore order by the familiar HP references and receive a direct drop-in upgrade. Builders needing unbuffered memory or higher speeds must look elsewhere.