Calculation force attenuation of Ethernet miner

1.

Miner components include CPU, GPU, motherboard and hard disk, similar to a high configuration computer with a hard disk. Self assembly mainly depends on which aspect of hardware performance you want to highlight

mining machine has computing power, display card mining machine and storage mining machine. Daotong storage has long been concerned about the dynamic and hardware supply of mining machine, and its own components will be cheaper than those of the manufacturer< br />

2. Generally, it's not recommended to buy mine cards. If you're lucky, it may be OK to use them for half a year. If you're not lucky, it's not impossible to have problems when you buy them home.
some mine cards look good because there's no st in the mine machine, but because the hardware has been overused, all kinds of unstable problems may appear when you play games on the computer, And manufacturers generally do not guarantee the quality of mine cards.

3. Firstly, the cost of bitcoin mining can be divided into three parts:
1. Machine cost: the cost of purchasing mining machine
2. Power cost: the power cost consumed by machine mining
3. Auxiliary costs: personnel maintenance, network, cable consumables, heat dissipation, etc.
for a simple example, take the mining machine of ant S9, which consumes less power on the market, for example, the calculation power is 13.5T, and the power consumption is 1400W
when the mining machine runs for 24 hours: 1.4kw * 24 = 33.6 degrees
Shenma m3, which consumes more power on the market, has a calculation power of 11.5t, The power consumption is 2150w
under 24-hour operation, the power consumption of a single machine is 2.15kw * 24 = 51.6oc
which is roughly equivalent to the power consumption of energy-saving air conditioning, but the bitcoin miner needs 24-hour uninterrupted operation, the power consumption of a single machine is very large after a year's calculation, and the step price cost of household electricity is too high, When the market is not good, the income may not be enough for the electricity expenditure, so at present, mining will choose to be hosted in the mine, which can get cheap electricity and rece the cost price of mining. The price below 30% is the ideal price, which can keep the price of bitcoin falling to a low level, and there is still some income< According to the current mining difficulty of bitcoin:
BTC revenue per ton: 1th / s * 24h = 0.00007087btc
calculated by the comprehensive 12t machine computing power, the daily output is:
0.00007087t * 12t = 0.00085044btc
then the time required for a single machine to dig a BTC:
1 / 0.00085044 = 1175 days
the time required for ten mining machines to dig a BTC:
1 / 0.0085044 = 117 days
100 days In other words, according to the current difficulty, it takes about three years for a single miner to proce a bitcoin, 3.9 months for ten miners to dig a bitcoin, and 11.7 days for a hundred miners to dig a bitcoin. The cost of a single miner is about 8500, Ten are around 85000, one hundred is 850000, less than one million, and one month's income is more than two bitcoins. According to the current price of bitcoin, the price is about 120000. So, although the income of bitcoin mining is not as good as before, it is still considerable compared with other investment projects
however, these benefits do not include decting the cost of electricity charges and later maintenance of machines, so the premise of mining is to find a mine with low electricity charges. If the quantity is large, we need to find a safe, reliable and stable mine. What's more, we need cheap electricity to lower the cost price.

4.

Bitcoin uses SHA-256 encryption algorithm. When mining, it competes with computing power. In order to improve computing power, bitcoin has gone through four stages: CPU mining, GPU mining, FPGA mining and now ASIC mining machine mining, and the degree of specialization is getting higher and higher

Ethereum uses the ethash encryption algorithm. In the process of mining, it needs to read the memory and store the DAG file. Because the bandwidth of each read memory is limited, and the existing computer technology is difficult to have a qualitative breakthrough in this problem, so no matter how to improve the computing efficiency of the computer, the memory read efficiency will not be greatly improved. Therefore, in a sense, Ethereum's ethash encryption algorithm is ASIC resistant.

different encryption algorithms lead to great differences in mining equipment and computing power between bitcoin and Ethereum

at present, bitcoin mining equipment is mainly ASIC mining machine with a very high degree of specialization. The maximum computing power of a single mining machine is 110t / s, and the scale of computing power of the whole network is more than 120eh / s

the main mining equipment of Ethereum is video card miner, and there are very few specialized ASIC miner. On the one hand, the "ASIC resistance" of Ethereum mining algorithm improves the threshold of developing ASIC miner. On the other hand, after Ethereum is upgraded to 2.0, the consensus mechanism will be transformed into POS, and the miner can not continue mining

compared with the ASIC miner, the graphics card miner has two orders of magnitude difference in computing power. At present, the computing power of mainstream graphics card miner (8 cards) is about 420mh / s, and that of Ethereum is about 230th / s.

from the time dimension of the past two years, bitcoin's computing power of the whole network is growing rapidly, while Ethereum's computing power of the whole network is growing relatively slowly

The ASIC mining machine of

bitcoin is monopolized by several major mining machine manufacturers, and miners can only buy it from the market; Although the graphics card miner of Ethereum is also manufactured by a special miner, the miner can buy accessories from the market and assemble them according to his own demand

5. If you want to make profits online, you still have to look at the risk of fire. If you are optimistic about the risk, you can do it again. Don't take the risk to do it.

6. There must be damage. First of all, only a card can be used for mining, and N card is boring for mining.
secondly, the computer needs to be running all the time and can't be turned off for mining, which requires a lot of computer. It is harmful for each part to do a lot of calculation for a long time, and it also requires high power supply for the computer
mining can't be powered off, and it needs to be recalculated after power off. Graphics card long time to do a lot of calculations will lead to greatly shorten the life of the graphics card, so their own home, do not recommend mining, mining is not as expensive as electricity

7. It depends on the difficulty of the algorithm and the current currency price. The income is not fixed!

8. It's hard to say. If the currency price continues to fall, the miners generally lose confidence in bitcoin, and the mining income is seriously lower than the mining cost, then a large number of miners will stop mining, and the computing power will drop sharply. In addition, because the major countries in the world adopt a more stringent attitude towards bitcoin, such as China and the United States, bitcoin's computing power may also drop sharply, or even disappear

but bitcoin mining as an infrastructure, if bitcoin can continue to exist, although the income of mining is reced, for the security of the whole bitcoin network system, some big bitcoin companies may invest in mining to maintain the security of bitcoin network system. In addition, the future of bitcoin will become more clear and bright. Bitcoin's computing power will not decrease, but will increase.

9.

If you forget the stock capital password and transaction password, there is no other way, you can only bring your ID card, shareholder account card and other relevant materials to the securities counter. For specific questions, you can consult the customer manager

stock account refers to the account opened by investors in securities companies for stock trading

opening a stock account is a prerequisite for investors to enter the stock market

precautions for opening stock account

(1) required certificate: ID card. If a legal person's stock account is opened, the original (or ) of the business license and the power of attorney of the legal person shall be issued at the same time

(2) fees include: application form fee and account opening fee

(3) operation process: investors need to fill in the application form and pay the handling fee; Hold relevant certificates, application forms and receipts of account opening fees to the account opening counter and hand them to the counter undertaker; After the undertaker checks the above materials, the applicant takes back the relevant certificates and receipts and gets the stock account card

extended information:

stock account loss reporting and re handling

(1) Shenzhen securities account loss reporting and re handling

1. If an investor loses his securities account card, he / she can report the loss and re handle the new number of securities account at Shenzhen Branch of China Securities Regulatory Commission or its designated securities business office with his / her ID card

2. If the investor loses the securities account and ID card at the same time, he / she should report the loss and go through the replacement proceres with the ID card loss certificate, account book and its issued by the public security organ

3. If the investor entrusts others to report the loss, the agent should present the legal notarization document at the same time

(two) the loss of the securities account in the Shanghai Stock Exchange and the replacement of the

securities business department will apply for the loss of the securities account according to the following proceres:

1, carefully examine the identity card of the investor (for example, if the identity card is lost at the same time, it must provide the certificate of loss of the body certificate issued by the public security police station under the registered residence, and paste the official seal of my recent certificate); p>

2. All securities in the securities account will be frozen

3. After the investor provides a new securities account with the same securities account registration information opened by the agency of Shanghai Securities Central Registration and Clearing Company, the corresponding securities account transfer proceres shall be handled for the investor

(4) after the securities business department has accepted the transfer of investors' accounts and registered their securities subsidiary accounts, it will send the change information to Shanghai Securities Central Registration and Clearing Company for change registration before the closing of the market on that day

5. The securities business department can handle the application for investors to cancel the loss report, but the securities account that has gone through the proceres of securities transfer can not cancel the loss report

6. When the securities business department accepts the loss report of investors' securities accounts, the Shanghai Securities Central Registration and Clearing Company will change all the securities rights and interests in the loss report account to the account of the transferor at one time

10. There are three types: application type, payment type and security type. Most of them are applied tokens. Singapore has other regulatory policies for securities and payment.