https://blog.wongcw.com/2020/05/05/%e5%96%ae%e6%9c%88%e5%a4%a7%e6%bc%b220-ddr4%e5%85%a7%e5%ad%98%e5%83%b9%e6%a0%bc%e5%89%b5%e4%b8%8b10%e5%80%8b%e6%9c%88%e4%be%86%e6%96%b0%e9%ab%98/