https://blog.faceutil.com/2017/03/20/%ec%bb%b4%ed%93%a8%ed%84%b0-%ec%82%ac%ec%96%91%ec%9d%84-%eb%b3%b4%eb%8a%94-%ec%9c%a0%ed%8b%b8cpu-z-%e3%83%a9/