HPE 647871-B21 4GB DDR3 ECC Registered DIMM memory card

Server-grade DDR3 ECC module

This 4 GB DDR3 registered DIMM delivers error-correcting memory for HP ProLiant DL385p and BL465c servers. It operates at 1333 MHz with CL9 latency and conforms to the PC3-10600 standard. The 240-pin form factor fits compatible server motherboards directly. Buyers needing higher capacities or faster speeds must look elsewhere.

Registered DIMM for ProLiant systems

The module installs in a 240-pin DDR3 slot and uses registered signal processing to reduce electrical load on the memory controller. ECC circuitry detects and corrects single-bit errors without user intervention. It requires a server platform that supports registered ECC DDR3 memory. Desktop boards and consumer laptops cannot use this module.

Steady throughput under ECC load

Error checking runs continuously during sustained workloads, maintaining data integrity across long compute cycles. Registered buffering keeps signal timing stable when multiple modules populate the server. The CL9 timing remains consistent at the rated 1333 MHz frequency. Systems without ECC support will not benefit from the error-correction capability.