397819-B21 HP 2.80GHz 1MB L2 Cache Socket PGA-940 AMD Opteron 254 1-Core Processor

The 397819-B21 is an HP‑branded AMD Opteron 254 processor designed for legacy server platforms that use the PGA‑940 socket. It delivers a clock speed of 2.80 GHz and incorporates a 1 MB L2 cache to support basic compute workloads. As a single‑core unit, the processor is suited for entry‑level or dedicated‑function servers where power efficiency and cost are priorities. The part number aligns with HP’s inventory system, ensuring straightforward replacement and compatibility with HP server configurations that specify the Opteron 254. This component provides reliable performance for applications that do not require multi‑core processing.