比特币 - 简单来说，是一种数字货币。我们（以及许多其他人）认为它是一项非凡的创新，因为这种数字货币不会受到任何中心化机构控制。比特币网络是完全去中心化的，货币本身是由一个任何人都能参与的社区产生的。相比于银行汇款的高昂手续费和超长耗时，比特币汇款能做到几乎免费、实时到账。
Bitcoin is created by the act of mining. The members of the network provide their computational power for calculations of mathematical problems, and for this effort they are rewarded with Bitcoins. However, the more members are mining, the more competitive it gets. Computers are really good at solving these mathematical problems, so the Bitcoin network purposely makes the solution more and more difficult, otherwise, all of the Bitcoins would be mined in a couple of minutes. This is why there are already many highly specialized hardware on the market, their only purpose being exclusively Bitcoin mining.
As new models come out quite frequently, everyone must regularly optimize their mining gear, in order to stay competitive. Once a new mining rig is introduced to the market, the old ones quickly become outdated. At the same time, this gradual development of the technology increases the overall difficulty of mining again. The result is a never ending circle of the constant need to optimize. This explains why it’s a must to start with the best available hardware, and to start immediately in order to keep the mining performance at its best for as long as possible, as well as not to lose a minute of precious mining time.