https://blog.wongcw.com/2022/02/20/%e5%9c%8b%e7%94%a2%e5%85%a7%e5%ad%98%e6%8f%90%e9%80%9f%e4%bb%8a%e5%b9%b4%e6%8a%95%e7%94%a217nm-ddr5%e5%85%a7%e5%ad%98%e6%9c%89%e6%88%b2/