Second hand miner graphics card

1.

The graphics card market in 2017 is the most special in recent years. In the past few years, no graphics card will increase its price by 100% a few months after its release. RX 580 has achieved this goal. Together with all the graphics cards below 3000 yuan, it has broken through the premium point in an irresistible manner. All this happened with the bitcoin price breaking through 3000 US dollars. After miners swept the RMB 2000 RX 580, the price of low-end RX 560 and even GTX 1050 Ti increased to varying degrees. However, is the price directly proportional to the ability of hash algorithm? Recently, we did a test to collect the new generation of graphics cards at various prices on the market, test the mining speed of Ethernet and bitcoin, and see which card has the highest cost performance

Different from the thousand yuan market, this wave of mining tide has a great impact on high-end graphics cards. In the test results, RX 580 and Rx 480 have almost reached the bottom of GTX 1070. Moreover, the price of Rx 580 is even competing with that of GTX 1070, so the miners directly swept the 3000 yuan market when GTX 1060 3gb / 6GB is out of stock, and GTX 1070 is basically out of stock. The more advanced GTX 1080 is also out of stock, but it's not clear whether the players are forced to go directly to the high-end card or the miners extend their claws to this market. The situation of GTX 1080 ti is only slightly improved, but it's not much better. However, not everyone can afford the 6000 yuan graphics card. Only the top players will be affected, but it's just a narrower choice. It's not the case that the rich can't buy it

summary:

to mine, the first choice is the graphics card with more than 3gb video memory, which is the basis. In addition, the core frequency will affect the mining speed. We have two GTX 1080 cards on hand, one is public version, and the other is MSI GTX 1080 gaming X. the operating frequencies of the two cards are 1885mhz and 1936mhz respectively. After testing, because of the frequency, the latter will be about 4% faster than the former in actual mining. The advantages of high-frequency graphics card are highlighted

So Xiaobian's opinions and suggestions are as follows:

the low-end card and the old architecture card are not suitable for mining. GTX 1080 ti is an extreme, with the most powerful performance, but the price is not suitable for large-scale procurement. The mining speed of a card with the same location is much faster than that of N card, The cost performance of GTX 1060 3gb is higher than that of GTX 1060 6GB. The frequency and the number of stream processors / CUDA have a great influence on the performance of the card. The size of video memory has no influence on the mining. It's enough. Different video cards will have different profits if they dig different coins. If you want to further explore, you need to test several currencies, Limited to space, we only select two representative currencies to test

as long as the mine disaster does not occur, the shortage will last for a long time. However, if there is a mine disaster, a large number of second-hand mine cards will directly enter the market. These cards are always running at full load and full speed, and their service life is greatly shortened compared with that of ordinary users. Even if the price is lower, they will roll over at any time, There is no need to start at all. Moreover, the second-hand market will be directly disrupted. At that time, it will be difficult for some normal users to get out of the second-hand market, and the deep-water fish's Dragon killing knife will explode the galaxy. Now it is said that NVIDIA is making some graphics cards without display output interface, which are provided to miners as mine cards. With a certain capacity, if the mine card still can't satisfy the miners, won't the miners buy the graphics card in the consumer market? The only function of these special mine cards is to prevent mine cards from flowing into the second-hand market, which can not alleviate the current shortage of graphics cards

2.

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

3. Mining machine is mainly graphics card performance, the server requires CPU performance, completely different
mining machine can't replace server. Home high-end configuration of the second-hand host can be. Or directly to the second-hand market to find second-hand server on the line.

4. Naturally, there are only second-hand platforms like salted fish or 58. But there are a lot of knights in it

5. The most important thing is to ensure the safety of funds, do not pay the seller, the other side does not give you delivery, followed by the selection of reliable sellers, this line of water is too large, many of the mining machine are indivials, really run can not find, you can go to today's miner official website to understand, or publish the machine you need.

6. At present, mine accidents generally refer to coal mine fatalities, so it is coal mine workers who are killed in mine accidents, of course, including coal mine management personnel. In 2010, there were four fatalities in my city, each of which was one person. As a result, it happened that every time it was the head of safety supervision section. I graated from the coal school, and my classmates and alumni have also sacrificed in the mine.

7.

What are the conditions for Singapore foundation to handle:

Singapore non-profit foundation needs to provide:

1. Company Name: can only be used in English, and the company type is public guarantee limited company, ending with the title of Ltd. or limited

2. Registered capital: paid in SGD 1, and the guarantee amount is only SGD 1

3. Director members: directors are required to have no shareholder position, just like ordinary companies, where shareholders are called members, and their functions can also be held by the company

4. New address: the local secretary's address can be provided by the agency

5. Business scope: select two, and only two will be displayed on the registration paper

6. The company's legal secretary can be provided by the agency

the advantages of registering Singapore Foundation:

(1) the foundation has no shares or shareholders, so it can't pay dividends. Therefore, the funds raised by the blockchain are managed by the foundation and will be used for the project completely, and will not be shared by members

(2) as long as there is no cash and surplus at the end of the year, the foundation does not need to pay tax. It's a zero tax return

therefore, the Singapore foundation is the preferred entity for issuing tokens for financing. It is also an organization with credibility in the world. The supporting legal documents issued by Singapore lawyers guarantee the non securities nature of the token issued by the project, and file the project with the government in the name of lawyers

2. Legal compliance: Singapore lawyers shall issue supporting legal documents to guarantee the non securities nature of the token issued by the project (audit white paper), and file the project with the government in the name of lawyers

3. Operation and audit execution of the foundation

8. The so-called Singapore foundation is a public guarantee company limited, a kind of non-profit organization in Singapore< For example,
lightcoin is better than the original blockchain.
let me give you a detailed introction of the registration process:
the name of the fund or foundation: all English in capitals, without Chinese, ending with Ltd / limited, and in the middle can add foundaton / cfond,
s Certificates / passports for two or more members, (passport requires proof of address)
Singapore Secretary / Director (provided by our company)
the completion time is 10-15 working days
it's very simple. As for the registration fee, you should pay attention to screening. If you plan to operate the project for a long time or prepare to issue currency, you must register a compliant foundation. Of course, the fee is a little higher, However, it has laid a good foundation for the later operation, and the most direct impact is the price of the legal opinion issued by the lawyer. The price difference of one of the items is enough for you to re register a foundation, so you must ask clearly when you register. Don't be greedy for cheap, so as not to cause trouble in the future
if my explanation is not very clear, you can ask / call me and I will reply when I see it

9. It's hard to say. There may be a problem with the second-hand graphics card itself,
there may be a problem with the cable to be replaced,
there may also be a problem with the graphics card driver,
you need to go to the official website or install the appropriate graphics card driver with software such as driver life.

10.

In order to analyze the ration of the fund disk, we should not only reserve relevant knowledge, but also learn to look at the nature of the project, the flow of funds and the cycle of the model

1. Depending on the nature of the project,

if the domestic capital sets up the stock market and banks, none of them is legal, the stock market is unstable, and the banks have little profit. All those who say they are legal are emboldened, and those who say they have strength and background are not allowed to do so. This kind of fund can not be done for a short period of time

the essence of the so-called pyramid scheme is pyramid scheme pyramid scheme, in which the so-called fund disk is in the form of rolling or static capital circulation, breaking the wall to make up the wall, and paying the former members with the money after joining. It is very hidden, deceptive and harmful to society