Virtual currency mining leads to return of graphics card

1.

Why use graphics card to mine

compared with CPU, GPU is used for general purpose calculation. So it can stack hundreds of stream processors awesome. Each stream processor is like a small CPU. Although its ability to run complex programs is far from the power of CPU, it can not support many processors, so the actual performance, especially the single precision floating point performance is much stronger than that of CPU. p> However, as we have mentioned before, a card is very suitable for general computing such as virtual currency because it has many stream processors, and the speed of obtaining specific solutions is much higher than that of N card. Therefore, many miners rush to buy a card to calculate virtual currency for profit

of course, with NVIDIA's Pascal graphics card, n card's ability in mining virtual currency is not as different as a card before. So in the current situation that a card is generally out of stock, those mid-range N cards have become the second choice for miners

What are the disadvantages of mine card

finally, I want to talk about why we can't choose mine card when we are shopping for second-hand cards. Because the miners are mining bitcoin, the most important thing is to seek profits. Therefore, the graphics card they use is running and calculating all the time, and its strength is far greater than that of daily game applications. In other words, running such a calculation for one day is equivalent to running a graphics card for one month

in addition, the places where virtual currency is mined are mostly the places where multiple graphics cards gather. Thousands of graphics cards are constantly calculating in a room, and their heat is also quite huge. Miners can not choose the chassis with good heat dissipation conditions like ordinary consumers, so that the heat can be released smoothly. In this way, the graphics cards can still operate for 7 * 24 hours under high temperature conditions, It also deepens its aging degree

the result of doing so is that the graphics cards used for mining are lost prematurely. If you buy these graphics cards, the result will be unstable operation, restart and other things will continue to happen

moreover, at present, manufacturers also have strict requirements on mine cards, such as banning second-hand sales and shortening the shelf life. If users buy these mine card graphics cards, future maintenance will also be a big challenge

2. Memory jammed, too high temperature, loss?

3. The cleverness of bitcoin design is that the groups and organizations with greater energy and computing power have more responsibility to maintain the security of the whole network, which is in their interests. The greater the ability, the greater the responsibility, which is reflected incisively and vividly in the bitcoin network, is an equilibrium point in the dynamic asymmetric game.

4.

As of October 1, 2020, the state has not issued five element currency, which is illegal

the five elements coin is a virtual circular steel sheet of a pyramid selling group, which is only one circle larger than the ordinary one yuan coin. Its claimed price is 5000 yuan, which is called pure gold

one side is printed with the words of "gold", "wood", "water", "fire" and "Earth", and the other side is printed with a personal portrait and the words of "Zhang Jian's five element coin". According to the MLM personnel, the "five element coin" is a limited edition, with a total of 500 million issued by MLM criminal groups

"five element coin" is operated by a website called "Cloud Data Trade Alliance" without registered address, and its founder is Zhang Jian. In September 2013, the State Administration for Instry and Commerce and the Ministry of Public Security announced ten typical cases of pyramid selling, including the case of Cloud Data Trade Alliance

extended information:

according to Liao Jinsong, leader of Economic Investigation Branch of Chenzhou Public Security Bureau, "five element coin" pyramid scheme was launched by song miqiu at the end of 2016, and members were developed according to the mode of "Y, s and M". Among them, the membership fee for y-class members is 500 yuan, that for S-class members is 2500 yuan, and that for M-class members is 5000 yuan. M-class members are mainly promoted, and members are developed in a al track way to "pull the head" to join

according to the MLM promotion of "five element coin", there are two main benefits of member development offline. One is cash income. For every member who develops, he can get a direct promotion award of 10% of the membership fee; A team with 200 members will win a "BMW Award" of 150000 yuan. In addition, there are virtual currency value-added benefits brought by static value-added, collision award and so on

Liao Jinsong pointed out that in order to avoid legal liability, the pyramid scheme of "five element coin" in the actual promotion process is under the guise of "selling five element gold coins", trying to create the illusion of "selling" gold coins, but its characteristics of "pulling the head", forming the hierarchy in order, and rebate through the hidden layer of "BMW Award" determine the essence of pyramid scheme

5.

Mining bitcoin is also called mining. Starting from the essence of bitcoin, the essence of bitcoin is actually a special solution generated by a bunch of complex algorithms. A special solution is one of the infinite (in fact, bitcoin is finite) solutions that can be obtained from the equations. Every particular solution can solve the equation and is unique

in the metaphor of RMB, bitcoin is the serial number of RMB. If you know the serial number of a note, you have the note. The process of mining is to constantly seek the special solution of this equation system through a huge amount of calculation. This equation system is designed to have only 21 million special solutions, so the upper limit of bitcoin is 21 million

bitcoin: also known as "bitcoin", is a kind of network virtual currency. Internet users can use bitcoin to buy some virtual goods, such as clothes, hats, equipment, etc. in online games. Internet users can also use bitcoin to buy real goods

extended data:

shortcomings

first, the vulnerability of trading platform. The bitcoin network is robust, but the bitcoin trading platform is fragile. Trading platform is usually a website, which will be attacked by hackers or shut down by competent authorities

Second, the transaction confirmation time is long. When bitcoin wallet is first installed, it will consume a lot of time to download historical transaction data blocks. While bitcoin transaction, in order to confirm the accuracy of data, it will take some time to interact with P2P network, and the transaction will be completed only after the whole network is confirmed

Thirdly, the price fluctuates greatly. Due to the intervention of a large number of speculators, the price of bitcoin for cash fluctuates like a roller coaster. Making bitcoin more suitable for speculation rather than anonymous trading

Fourthly, the public did not understand the principle, and the traditional financial practitioners resisted. Active netizens understand the principle of P2P network and know that bitcoin has no legal person to manipulate and control. But the public doesn't understand, and many people can't even tell the difference between bitcoin and q-coin“ "No issuer" is the advantage of bitcoin, but in the view of traditional financial practitioners, "no issuer" currency is worthless

6. First of all, mining itself is an extreme use of graphics card performance, easy to cause premature aging and failure of graphics card. Moreover, these foreign mining speculators buy a large number of graphics cards and return them, resulting in the tight inventory pressure of Jingdong. Not to mention, they will also cause a large number of second-hand graphics cards to flood the market. Players may finally blame "second-hand East".

7.

The virtual currency soared, and the graphics card for absenteeism insurance caused a heated discussion among netizens on the Internet. We have to say that we all know that the graphics card is an important part of a computer, which is what we know as the display adapter. mining also uses the chip to calculate a random number, and get the corresponding reward after getting the answer, Therefore, the graphics card is crucial and a very good mining tool, so there is a reason for players and miners to compete for the graphics card

I hope everyone can remember this. Although virtual currency is rising very fast and everyone wants to enter the market to eat meat, now is not a good time to enter. We all know that bitcoin is a Ponzi scheme. I hope everyone can realize this. We also hope that more and more people can work hard to earn money

8. If the price of virtual currency is reced, there will be less people to buy graphics cards and fewer people to buy them, which will affect the supply and demand of graphics cards
as long as the supply exceeds the demand, the price will drop

9.

In recent weeks, the high-end GPUs of almost all major foreign retailers have been out of stock. The price of high-end graphics cards has been soaring, and the shortage does not seem to end soon. Behind the unprecedented shortage of GPU is the influx of miners who are engaged in the exploration boom of Ethereum, bitcoin and other cryptocurrencies. It is difficult for game players to obtain one card. NVIDIA even implements "two cards for single user"

the main culprit for the shortage of graphics cards is that high-end graphics cards are the best way to tap Ethernet and other non bitcoin cryptocurrencies. With the popularity of blockchain concept in recent weeks, the price of these cryptocurrencies has risen to an unprecedented height. A powerful graphics card can dig up a few dollars in cryptocurrency every day. Therefore, more and more amateur miners began to compete for graphics cards, resulting in the shortage and high price of graphics cards for other non currency people

not only there is no high-end graphics card to buy, but also the manufacturer has informed customers that the return policy of graphics card is suspended

10. Compared with CPU, GPU computing will have an absolute advantage in bitcoin mining
1. CPU is mainly optimized for serial instructions, while GPU is optimized for massively parallel operations
2. Modern multi-core CPU aims at instruction set parallelism (ILP) and task parallelism (TLP), while GPU is data parallelism (DLP)
3. GPU often has a larger bandwidth of memory, that is, the so-called video memory, so it will also have good performance in high throughput applications
the CPU needs strong generality to deal with various data types, and at the same time, it also needs logical judgment, and it will introce a lot of branch jump and interrupt processing. All these make the internal structure of CPU extremely complex. GPU is faced with highly unified, interdependent large-scale data and pure computing environment without interruption. GPU uses a large number of computing units and ultra long pipeline, but it only has very simple control logic and saves cache. The CPU not only occupies a lot of space by cache, but also has complex control logic and many optimization circuits. So unlike CPU, GPU is good at large-scale concurrent computing, which is suitable for password cracking
in short, CPU is a general-purpose operation. In short, it means brainless calculation and violent calculation. Whether it's 100 children sharing apples or simulating the earth, it can be decomposed into the most basic calculation of 1 + 1 = 2. GPU is specially designed to deal with high-order mathematical algorithms, such as calculating the relative positions of light source, object, viewpoint and shadow, which requires trigonometric functions to be piled up. The bitcoin digger uses SHA-256, a secure hash function invented by the US National Security Agency, which is generally used for password encryption and decryption. This algorithm can perform a large number of 32-bit integer right-rotate operations, which is very suitable for GPU which is good at large-scale concurrent computing and password cracking.