https://blog.wongcw.com/2021/04/26/%e6%9c%97%e7%a7%91%e8%87%aa%e7%94%a2ddr5%e5%85%a7%e5%ad%98%e9%ab%98%e6%b8%85%e5%9c%96%e8%b3%9e%e5%b0%87%e8%a1%9d%e6%93%8a10ghz%e9%a0%bb%e7%8e%87%e5%a4%a7%e9%97%9c/