https://qooah.com/2012/09/22/vellamo-benchmark-%e5%b7%b2%e7%b6%93%e5%8f%af%e4%bb%a5%e6%9b%b4%e6%96%b0-%e5%a2%9e%e5%8a%a0-cpu%e3%80%81ram-%e6%b8%ac%e8%a9%a6/