显卡挖矿太赚钱，自己家里搞一个，都能有很好的收入。这导致显卡极度缺货，京东上面早就抢光了。去年，我花2000元买了一块二手显卡。现在用了一年再卖掉，可以卖5000元。
https://twitter.com/ruanyf/status/1382870487018086400
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