https://blog.wongcw.com/2021/11/19/cpu%e5%a4%a7%e7%89%9b%e3%80%81zen%e4%b9%8b%e7%88%b6jim-keller%e8%a2%ab%e5%82%b3%e5%b0%87%e5%8a%a0%e5%85%a5%e4%b8%89%e6%98%9f-%e7%a0%94%e7%99%bcai%e8%99%95%e7%90%86%e5%99%a8/