https://blog.wongcw.com/2018/12/26/rtx-2060%e5%ae%b6%e6%97%8f%e9%99%a3%e5%ae%b9%e9%be%90%e5%a4%a7%ef%bc%9a%e6%9c%89gddr6-gddr5%e3%80%813-4-6gb%e9%a1%af%e5%ad%98%e4%b9%8b%e5%88%86/