The 538607-001 is an HP‑specified AMD Opteron 2381 HE quad‑core processor designed for servers that utilize the FR5 (1207) socket. It operates at a 2.5 GHz clock frequency and includes a 6 MB L3 cache to support demanding multi‑threaded workloads. The processor also features a 2000 MHz HTL interface, providing high‑speed communication between the CPU and system components. As a genuine HP part, it ensures compatibility with HP server platforms and delivers the reliability expected from the Opteron family for enterprise‑grade applications and scalability.