https://blog.wongcw.com/2018/10/01/amd-zen2%e6%a0%b7%e5%93%81%e6%8a%b5%e8%be%be%e5%ae%9e%e9%aa%8c%e5%ae%a4%ef%bc%9a8%e6%a0%b8%e5%bf%8316%e7%ba%bf%e7%a8%8b-%e5%8a%a0%e9%80%9f4-5ghz/