HP part number 635809‑L21 identifies a high‑performance server processor designed for enterprise workloads. Built on AMD’s Opteron 6166 HE architecture, this 12‑core CPU delivers a base clock of 1.8 GHz and can reach up to 3.2 GHz, providing ample throughput for multi‑threaded applications. It incorporates 12 MB of L3 cache to reduce memory latency and is compatible with the Socket G34 platform, ensuring seamless integration into existing HP server chassis. The processor’s HTL designation indicates support for high‑temperature operation, making it suitable for dense, high‑availability environments. Overall, the 635809‑L21 offers robust performance and scalability for demanding server deployments.