If you still have the original retail box, locate the white barcode sticker. A 13-digit alphanumeric string.

: The tool reveals the Ordering Part Number (OPN) and packaging type, which is vital for finding compatible motherboards, memory, and BIOS updates. Important Limitations

If your processor fails within its warranty period (usually 3 years for retail boxed processors), AMD will require the exact serial number and OPN to process a Return Merchandise Authorization (RMA).