The 663373-L21 is a Hewlett‑Packard part number for the AMD Opteron 6274 processor, designed for enterprise server environments. It features sixteen physical cores operating at a base frequency of 2.2 GHz and includes a 16 MB L3 cache to support high‑throughput workloads. The CPU uses the Socket G34 interface, enabling installation in compatible HP and third‑party platforms that support the G34 socket. With a 3200 MHz bus speed and HTL designation, the processor delivers robust multi‑threaded performance for virtualization, database, and cloud applications, while maintaining the reliability expected of server‑grade silicon.