https://blog.wongcw.com/2019/12/09/%e5%9c%8b%e5%85%a7%e9%a6%96%e5%ae%b6dram%e4%be%9b%e6%87%89%e5%95%86%e8%aa%95%e7%94%9f%ef%bc%9a10nm%e7%b4%9a%e5%b7%a5%e8%97%9d%e6%9c%88%e7%94%a2%e8%83%bd%e5%b0%87%e4%bd%94%e5%85%a8%e7%90%833/