https://blog.wongcw.com/2022/07/20/%e7%94%a81mhz%e9%a0%bb%e7%8e%87%e7%9a%84cpu%e8%b7%91windows-7-%e5%95%9f%e5%8b%957%e5%80%8b%e5%8d%8a%e5%b0%8f%e6%99%82%e5%be%8c%e8%97%8d%e5%b1%8f/