The 636080-B21 is a genuine HP upgrade processor designed for the ProLiant DL385 G7 server. It features an AMD Opteron 6180SE with twelve cores operating at 2.5 GHz and a 12 MB L3 cache, delivering robust multi‑threaded performance for demanding workloads. The chip uses a Socket G34 interface and a 6400 MHz front‑side bus, ensuring high‑speed communication with compatible motherboards. As a direct replacement part, this processor provides a straightforward upgrade path for existing DL385 G7 systems, maintaining OEM compatibility and supporting the server’s enterprise‑grade reliability and scalability requirements.