https://blog.wongcw.com/2019/01/30/7nm-radeon-vii%e7%b5%82%e6%9c%89%e9%9d%9e%e5%85%ac%e7%89%88%ef%bc%9a%e8%bf%aa%e8%98%ad%e4%b8%80%e5%8f%a3%e6%b0%a3%e4%b8%8a%e5%9b%9b%e6%ac%be/