The 393829-B21 is an HP‑branded AMD Opteron 265 processor featuring a dual‑core architecture clocked at 1.80 GHz. It incorporates 2 MB of L2 cache and utilizes the PGA‑940 socket, ensuring compatibility with HP server and workstation platforms designed for this socket type. As a processor, it delivers reliable performance for enterprise applications and virtualization workloads while maintaining power efficiency. The part number identifies it as an OEM component for HP systems, simplifying procurement and replacement in environments that require the specific Opteron 265 specifications.