"With three mining machines, you don't have to go to work! Lie at home and wait to collect money!!!"
"Three months to pay back, except for electricity bills, the rest is all profit."
……
The screen is filled with such words, and bewitching.
Have you ever been moved?
Doubt it?
Want to roll up your sleeves and buy one to try?
When you have 20,000 yuan in your hand and are ready to enter the market, but you don’t know whether to buy coins or mine coins, you might as well read the following data.
If you don't even have the patience, then flip a coin and decide!
Because there is really no difference between buying coins and mining coins! ! (At least, that's how it was with Ethereum in 2018.)
If you then consider the time cost, electricity cost, maintenance cost, increase in computing power of the entire network, and other key factors. Then, mining coins will be a very uneconomical thing.
Why?
Look at the data below and you will know.
Suppose you have 20,000 yuan of idle funds in your hand, are you ready to buy coins? Or start with a mining machine to mine coins?
If we refer to Ethereum (eth), let's calculate the advantages and disadvantages of the two schemes.
Option A - Buy Coins
Assuming that on 2018.01.10 (the price of eth on that day was $1402.47, equivalent to RMB 9011.35), 20,000 yuan was spent to buy 2.2 eth, namely:
Option B - Mining Coins
Assuming that a mining machine (6 graphics cards: XFX RX570 4G Wolf Warrior Edition) is still purchased at a price of 20,000 yuan, the relevant parameters are:
Calculated based on the eth difficulty value (difficulty value = 2005.905T) on 2018.01.10, this mining machine can mine 0.022 coins a day, as shown in the following table:
★ Scenario 1: Assuming that the computing power of the entire network remains unchanged
If the computing power of the entire network does not increase (that is, the eth difficulty value is still 2005.905T), then our mining machine can mine 0.022 eth every day:
After 100 days, we harvested 2.22 eth:
If the fluctuation of the currency price is not considered, the cost of purchasing the mining machine has been recovered at this time:
In another week (about 6 days), the electricity consumed before can be fully recovered.
That is to say, on the 107th day after purchasing the mining machine, after removing the daily electricity bill, the rest is all net profit.
In this way, mining is much more profitable than buying coins directly.
But in reality, is this really the case? ? ? ?
Such an income result is obtained under a very important premise, that is,
"The computing power of the entire network remains unchanged!!!"
However, has the computing power of the entire network really not changed?
The following is the growth chart of the difficulty value of eth in the past 3 months (2017.10.17-2018.01.16):
Data source: https://etherscan.io/chart/difficulty
It is precisely because of the increase in computing power that the difficulty value continues to grow.
Therefore, our assumption that the computing power of the entire network remains unchanged is unreasonable.
So, in the real environment, how much profit can mining bring?
★ Scenario 2: The computing power of the entire network gradually increases
If the computing power of the entire network is increasing every day, then the mining machines we buy, the daily amount of coins mined will no longer be kept at the level of 0.022 evenly, but will decrease day by day:
The figure above is the curve of the daily amount of coins mined when the computing power of the entire network increases every day .
If the computing power of the entire network is measured in days, sometimes increasing and sometimes decreasing, then the daily coin mining curve will fluctuate.
In order to weaken the impact of this daily fluctuation, it is assumed that the computing power of the entire network increases once a month , and the difficulty value increases by 25% every month (Data source: https://etherscan.io/chart/difficulty
), then the amount of coins mined per month is:
That is, "without considering the fluctuation of the currency price and the eth difficulty value increasing by 25% every month, at a cost of 20,000 yuan, a mining machine with a computing power of 170Mh/s was purchased and operated 24 hours a day for 5 months. After that, you can return to this book.”
From the data point of view, the growth of the computing power of the whole network does not affect the payback time too much (only 50 days more):
The point is, can mining really bring more benefits after recovering the cost?
Continue to count down to see the amount of eth that can be obtained from the 6th month to the 12th month:
Plot the last 1 column in the table as a graph:
As can be seen from the figure, starting from the 6th month, the curve becomes more and more flat, until the 12th month, which is almost a horizontal line. That is to say, the same mining machine will continue to mine in the second half of the year and can only mine again. out 0.63 eth.
Assuming that the electricity price is 0.5 yuan/kWh, 24 kWh of electricity is consumed a day. Then, the annual electricity bill is about 4380 yuan.
However, the residential electricity consumption adopts the step-by-step pricing method. The mining machine will continue to run for one year, and the electricity price will be 0.2-0.4 yuan higher than 0.5 yuan/kWh (depending on the region). The electricity bill is maintained at about 5,568 yuan.
To sum up, if you spend 20,000 yuan to start a mining machine with a computing power of 170MH/s and a daily power consumption of 24 kWh, the cost is:
Assuming that the eth difficulty value increases by 25% every month, and the mining machine has no loss (that is, the computing power has been maintained at 170Mh/s), then the annual amount of coins mined is 3.038. Different currency prices, the corresponding income is about:
Referring to the mining cost (25,600 yuan), the corresponding income-cost for different currency prices is:
So, in general, mining is profitable as long as the coin price is strong.
However, its benefits are only roughly the same as those brought by buying coins. Considering the inevitable factors such as equipment loss and the rapid increase in the computing power of the entire network. Then, the income obtained from mining is actually less than the income that can be earned by directly buying coins.
Finally, attach the "cost-benefit comparison chart of buying coins and mining":
Give some eth if you find it useful! !
eth address: 0x18361Fc87b39b7174fFA4D84892E0b5A67283465