https://blog.wongcw.com/2019/08/31/amd-7nm%e9%8a%b3%e9%be%8dapu%e9%a9%9a%e5%96%9c%e6%9b%9d%e5%85%89%ef%bc%9a%e9%a6%96%e6%ac%a1%e6%94%af%e6%8c%81lpddr4x-4266/