https://blog.faceutil.com/2017/03/23/%ec%bb%b4%ed%93%a8%ed%84%b0-%ec%82%ac%ec%96%91%eb%b3%b4%eb%8a%94-%ed%94%84%eb%a1%9c%ea%b7%b8%eb%9e%a8speccy%ec%9c%bc%eb%a1%9c-%ec%82%ac%ec%96%91%ec%b2%b4%ed%81%ac%ed%95%98%ea%b8%b0-%ce%b1/