S-spec
Specification number, or S-spec number, is a five character code that uniquely identifies such CPU characteristics as core frequency, bus frequency, the size of level 2 cache, thermal design power, and so on.
一个标识码，使用这个标识码可以查到CPU的详细参数，例如：主频、总线频率、二级缓存的大小、设计散热功率等等。
就是CPU型号的一个统一化、简化的编号。通过这个可以查到CPU的详细信息。
FPO
Batch number (FPO)
批次号
FPO stands for - Finished Process Order
制造好CPU的序号
ATPO
ATPO stands for Assembly Test Process Order.
组装测试完成的序号。
完整信息在右上角二维码中，右下角是序号的末尾5位。
参考链接：
https://www.cpu-world.com/Glossary/S/Specification_(S-Spec)_number.html
https://www.intel.com/content/www/us/en/support/articles/000005609/processors.html
https://electronics.stackexchange.com/questions/2428/what-does-the-e3-or-e4-printed-on-an-ic-mean
http://boy.co.ua/decode.php
