以太坊如何挖矿？

以太坊ETH是一个开源的有智能合约功能的公共区块链平台，通过其专用加密货币ETH提供去中心化的以太虚拟机来处理点对点合约。目前ETH的挖矿主要是通过显卡矿机，所谓显卡矿机，其实就是类似家用台式机，只不过每台机器里面有6-10张显卡，并且没有显示器（如图）。

Ether is an open-source, smart-contracting public block chain platform that provides decentralised Ether virtual machines to handle point-to-point contracts through its specialized encrypted currency ETH. Currently, Ether digs are mainly through a card miner, the so-called card miner, which is a home-based desktop machine, except that there are 6-10 cards in each machine, and there are no monitors (e.g. graphs).

图：显卡矿机

之所以以太坊没有发展出类似于BTC一样的ASIC矿机，主要是由于ETH的特殊挖矿机制决定的。



在ETH挖矿过程中，会产生一个DAG文件，该文件需要一直被调用，因此必须有专门的存储空间放置。这个对于存储空间的硬性需求会导致即使生产出来了ASIC芯片，也并不能大幅度降低单位算力的成本。简单来说，就是性价比很差。



以太坊的DAG大小自2016年6月份引入Dagger-Hashimoto 算法时的1GB开始，以每年约520MB的速度增大到了现在的 3.7G，预计2020年底以太坊的DAG大小将增加至4G。

map: The hard demand for storage space does not result in the development of an ASIC mine machine similar to BTC, mainly because of the special mining mechanism of the ETH.


br/> in the ETH mining process, a DAG file will be generated and will need to be placed in a dedicated storage space. This hard demand for storage space will not significantly reduce the cost of unit capacity even if the ASI chip is produced. Simply put, the value is poor.


DAG size will increase to 4G sizes by 2020 from 1 GB when Dagger-Hashimoto was introduced in June 2016.

届时，显存小于4G的显卡都将被陆续淘汰。

还需要介绍一点的是，由于显卡矿机的体积通常是比特币矿机的2-4倍，而消耗的电力却只有比特币矿机的1/2甚至更低，这就导致一般人不愿意修建专门的显卡矿机矿场（因为矿场主要赚取的是电费差价，同样面积的场地，可以放置的显卡数量少，消耗的电量更少）。即使有少量的显卡矿场，收取的电费成本通常也比比特币矿机矿场的高。

At that time, a card containing less than 4G will be phased out.
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. > > >br/ > > > > It is also necessary to mention that since a card mine is usually two to four times the size of a bitcoin, the amount of electricity consumed is only one or two times less than a bit of a bitcoin, which leads to a general reluctance to build a dedicated card mine (since the mine primarily earns a difference in the cost of electricity, the same area of space allows for fewer cards to be placed and less electricity to be consumed). Even with a small number of cards, the cost of electricity is usually higher than in a bitcoche.
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现在流行云算力挖矿是不需要购买矿机的，运算力就是把矿机中的算力拆分来出售给客户，门槛会比较第一点操作简单灵活，直接在APP上面就可以买到矿机中的算力，算力就是用来挖比特币的挖到的比特币是直接可以提币到交易所交易

Now that you don't need to buy a mine machine, it's the ability to split the machine's computing to sell to the client. The threshold is simpler and more flexible than the first one. It's the ability to buy the machine's computing power directly on the AP. It's the ability to dig up bitcoin and sell bitcoin directly to the exchange.