2015 mining machinery

1. We are out of stock at present, we can only buy 2 hands

2. bitcoin is a kind of cryptocurrency based on decentralization, using peer-to-peer network and consensus initiative, open source, and blockchain as the underlying technology. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009. Unlike all currencies, bitcoin does not rely on a specific currency institution to issue. It is generated by a large number of calculations based on a specific algorithm. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of money circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity

warm tips:
1. The above explanations are for reference only, without any suggestions
2. Before investing, it is recommended that you first understand the risks existing in the project, and clearly understand the investors, investment institutions, chain activity and other information of the project, rather than blindly investing or mistakenly entering the capital market. Investment is risky, so we should be cautious when entering the market
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3.

is for reference only, subject to the actual situation

data on March 23, 2015

4.

0.1969btc bitcoin, which is calculated based on the mining difficulty on July 15, 2015, as shown in the following figure:

5. The use of bitcoin is generally related to the quality of mining machines and the growth of computing power of the whole network. Of course, it is also closely related to the electricity price

generally, the service life of mining machines is the whole network, and the relationship between computing power growth is the biggest, because the updating speed of mining machines is amazing. If you can't keep up with the cutting edge of the times, it's very difficult to make profits by using the old mining machines. Naturally, this kind of mining machine will be eliminated, short days, long months, but the general mining machines are rarely used for a year

of course, if the quality of the miner is OK, it will be OK to use it for one or two years

if your electricity price is low or free, then your mining machine will have a long service life, because a large amount of mining consumption is electricity

of course, it is only related to the price of currency. If the price of currency is high and profitable, the life of mining machinery will be delayed, and if the price of currency remains low, the mining machinery will be eliminated quickly.

6. Four 290 graphics cards are selected in the configuration list. This is mainly because the 7990 graphics cards on the market are out of stock, and the performance of 290 is much higher than that of 280x. The official quotation is more than 3k, but it is not impossible to get the goods at the price of 2700-2800 in the actual market, so 290 graphics cards are selected. The purchase of the chassis is particularly important. The game fierce tiger shark chassis with the whole tower structure has good heat dissipation, and the 10 expansion slots are enough to control 4 graphics cards. The power supply is the cool all-in-one water-cooled radiator, and the effect with the 4th generation CPU is quite good. The price is also quite appropriate.

7. Bitcoin is a kind of P2P digital currency. The concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's idea, open source software was designed and released, and P2P network was built on it
unlike most currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to 21 million.

8. What do you mean by that? What kind of mine?

9.

The price of S5 is 1150 yuan per set. The following is its basic information:

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however, ant mining machine has been out of S7, S5 has been out of mine, if there is free electricity, it is recommended to buy, if there is no free electricity, it is better to save it, do not go mining

it's better to buy bitcoin directly from the trading platform, and the cost of purchase may be lower than that of mining. Moreover, most of today's digital currencies do not adopt the mining method of bitcoin. A typical example of this kind of currency is Ruitai coin and Qianjin card