The 654805-B21 HP Processor Kit features the AMD Opteron 6276, a 16‑core server CPU operating at 2.3 GHz. It incorporates a 16 MB L3 cache and is designed for the Socket‑G34 (LGA1944) platform, providing the socket compatibility required for high‑density, multi‑processor configurations. Packaged as a complete kit, the unit is intended for integration into HP server systems, delivering the core count and clock speed needed for demanding workloads such as virtualization, database processing, and scientific computing. The part number 654805‑B21 identifies the specific HP‑branded assembly, ensuring proper fit and support within compatible chassis.