Joule mining
It is reported that the performance of bm1385 chip is more than twice that of bm1384
The power supply scheme of S7 is similar to that of S5. The S5 + mode of dense chip arrangement is adopted, which makes the arrangement structure more compact. Under the same space, 60 chips are placed in S5 and 162 chips are placed in S7 The price of S7 is 1823 US dollars, equivalent to 11650 RMB yuan, and the delivery time is from September 21 to September 30. At the same time, the official announced the parameters of ant mining machine S7. The chip adopts bm1385, a 28nm fully customized chip independently developed by bitcontinental, with a computing power of 4.86t and a power consumption of 1201w. Ant miner S7 is the best miner with the best power consumption ratio so far, and the power per T is about 250W P>official website is not open for sale at the moment. Users of early adopters can place their orders in overseas official website. The delivery address is 17% of the Chinese mainland tax and the purchase price is 13630 yuan. p>
ant mining machine S7 specification parameters:
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rated calculation force: 4.86 Th / S ± 5%
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wall power consumption: 1210 watts (bit mainland apw3-1600 watt power supply, 93% AC / DC efficiency, 25 ℃ ambient temperature)
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power efficiency: 0.25 Joule / GH (wall, 93% AC / DC efficiency, 25 ℃) ° C)
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rated voltage: 12V ± 5%, which should not be lower than 12.0V
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number of single power board chips: 162x bm1385
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overall dimension: 301 mm (L) * 123 mm (W) * 155 mm (H)
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cooling: 2 × 12038 fan
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working temperature: 0 ℃ to 40 ℃
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network connection: Ethernet
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for details, please see "ant S7 miner start pre sale"
The soaring price of bitcoin will aggravate the shortage of chips and even threaten international security
after the end of February, bitcoin reached a high of US $57000 again today. At about 3 am on March 11, the price of bitcoin surged to more than US $57000, reaching as high as US $57277, a new high in the past two weeks, according to bitfan, a website of cryptocurrency market
However, the price of bitcoin continued to decline. As of the press release, the latest price of bitcoin was $55908.51, up 2.15% in 24 hours, and the market value returned to $1 trillion However, in the view of some financial economists, bitcoin's surge is not something to celebrate. On March 11, Alex de Vries, a financial economist, quantified in Joule, a journal of Cell Press, how the soaring price of bitcoin exacerbates energy consumption and global chip shortage, and even threatens international security{rrrrrrr}
extended information:
the price of bitcoin has risen sharply, and the miner and graphics card have been "hard to get one stock"
according to the official website of bitcontinental, the head miner, the relevant bitcoin miner has been sold out, and the delivery time has been postponed to October 2021. In the second-hand market, mining machine can easily resell to the official website more than 2 times the price. Just take the ant miner s1995t owned by bitmainland as an example, the reporter found that the retail market price of the machine whose official website price is about 20000 yuan can easily exceed 50000 yuan
as the "iron pick" in the hands of bitcoin miners, the graphics card is seriously affected. A large number of people in the instry believe that the rise in the price of graphics cards in recent years, and even now that NVIDIA's RTX 30 series and AMD RX 6000 Series graphics cards are "hard to get one card", are closely related to the huge demand of bitcoin miners for graphics cards
It doesn't mean China's Internet of things digital currency. CITDC is the abbreviation of China digital currency Group Co., Ltd
China digital currency Group Co., Ltd. has no relationship with China Internet of things digital currency. China digital currency Group Limited cannot issue digital currency
the central bank indicated that China has not issued the Internet of things digital currency for the time being. Nor has it issued legal digital currency, nor has it authorized any institution or enterprise to issue legal digital currency. And only the people's Bank of China can issue money
extended information:
on August 24, 2018, the website of CIRC issued a risk reminder to remind the public to guard against illegal fund-raising in the name of "virtual currency" and "blockchain"
the original text is as follows:
recently, under the banner of "financial innovation" and "blockchain", some lawless elements have absorbed funds by issuing so-called "virtual currency", "virtual assets" and "digital assets", thus infringing the legitimate rights and interests of the public. This kind of activity is not really based on blockchain technology, but hypes the concept of blockchain, illegal fund-raising, pyramid selling and fraud. It mainly has the following characteristics:
1. Obvious networking and cross-border. Relying on the Internet and chat tools for transactions, and using online payment tools to balance funds, the risks spread widely and spread quickly. Some lawless elements set up websites by renting overseas servers to carry out activities for domestic residents and control illegal activities remotely
some indivials claim that they have obtained the investment quota of overseas high-quality blockchain projects in the chat tool group and can invest on their behalf, which is most likely fraud. Most of these illegal funds flow overseas, which makes it very difficult to supervise and trace
Second, deception, temptation and concealment are strong. They use hot concepts to hype, fabricate various "tall and tall" theories, and some also use celebrity "big V" platforms to publicize. They use airdrop "candy" as temptation to claim that "currency value only rises but not falls", "investment cycle is short, income is high, and risk is low", which has strong bewitchingin practice, criminals illegally make huge profits by manipulating the price trend of the so-called virtual currency, setting profit and withdrawal threshold. In addition, some criminals also issue tokens under the guise of ICO, IFO, IEO, etc., or hype virtual currency in the way of IMO under the banner of sharing economy, which has strong concealment and confusion
Thirdly, there are many kinds of illegal risks. Through public publicity, criminals use "static income" (currency appreciation profit) and "dynamic income" (development offline profit) as t to attract public investment, lure investors and development personnel to join, and constantly expand the fund pool, which is characterized by illegal fund-raising, pyramid selling, fraud and other illegal behaviorsthis kind of activity takes "financial innovation" as a gimmick, and its essence is the Ponzi scheme of "borrowing the new to repay the old", so it is difficult to maintain the capital operation for a long time. The general public should treat the blockchain rationally, not blindly believe the promises, establish a correct monetary concept and investment concept, and effectively improve the risk awareness; We can actively report to the relevant departments the illegal and criminal clues found
if we want to take a closer look at what Ma Yun means, we can give an example:
when we shop on online shopping platforms such as Jingdong and Taobao, this is online sales, while when we shop in malls such as Wal Mart and Carrefour, this is offline sales. The combination of the two is called new retail. As a worldwide chain enterprise, Wal Mart is also the largest company in the world in terms of turnover. It is mainly involved in the retail instry. However, for a long time, it is not Carrefour or Costco that poses a huge threat to Wal Mart. But we know the Internet company - Amazon, e-commerce has a huge impact on Wal Mart. And Wal Mart also began to lay out the field of online shopping. Taking Wal Mart China as an example, Wal Mart launched Wal Mart flagship store, Sam's club and so on in Jingdong. At the same time, Wal Mart strategically invested in dada Jingdong home, built intra city distribution logistics, and realized the system of online and offline + modern logistics, which is the future form of new retail. For a long time in the past, we all think that e-commerce will be the future trend, and offline stores will die. However, in recent years, the development of e-commerce has become more and more smooth, and it has reached the bottleneck period. After all, online shopping still lacks a sense of experience of offline shopping. E-commerce giants have moved offline, and the physical instry has also begun to touch the net, which seems to be the rudiment of the new retail described by Ma Yun
of course, new retail is not simply online plus offline plus logistics, but also involves some concepts such as Omni channel, big data, artificial intelligence, Internet of things, etc., but if you understand it simply, you can understand it in this way.
Beijing Huilongguan Hospital Clinical Psychology Department Cao Wensheng attending physician