https://blog.wongcw.com/2020/11/19/%e8%8f%af%e7%82%ba%e9%ab%98%e6%80%a7%e8%83%bd%e5%8f%b0%e5%bc%8f%e6%a9%9f%e7%b4%b0%e7%af%80%e6%9b%9d%e5%85%89%ef%bc%9a%e9%af%a4%e9%b5%ac8%e6%a0%b8cpu8gb%e5%85%a7%e5%ad%98%e3%80%81%e7%8d%a8%e7%ab%8b/