How to calculate the payback period of Bitcoin mining machines, and the price-performance comparison of mainstream mining machines

Someone once asked Xiaolu about the payback period for mining machines. For Xiaolu, the answer to this question can be very simple or very complicated.

Because if you already have a target mining machine, then Xiaolu only needs to calculate the data and can directly tell you how long it will take to get your money back. But if you haven't decided what you want, then different mining machines have different prices and performances, and it would be more troublesome to explain them separately. Based on the view that it is better to teach a man to fish than to give him a fish, Xiaolu will first teach you how to calculate the payback period of a mining machine.

Generally speaking, to calculate the net profit, we need to know two factors, one is the income and the other is the cost. So to calculate the payback period of the mining machine, we also need to know these two points.

Since everyone wants to make money, let's start with the benefits. The benefits of a mining machine are to participate in the computing competition of the blockchain network with the computing power of the mining machine itself to obtain Bitcoin. So we must first know the computing power of a mining machine and how many Bitcoins can be mined with this computing power . Since the student who asked Xiaolu before asked about the Ant S9 mining machine, let's take it as an example.

New Antminer S9 Miner Profit Chart

From the data calculated by Xiaolu in the figure below, we can see that the computing power of the Antminer S9 is 14, and it can mine 0.000349 bitcoins per day. So let's convert this article based on the price of one bitcoin of 70,000 RMB. So, the mining income of an Antminer S9 per day is 24.43 RMB. Isn't it easy to calculate?

Now that we know the benefits, let's calculate its costs. When it comes to costs, many people probably only consider the equipment costs, but forget that mining machines also consume electricity, so we have to take the electricity costs into account . The Antminer S9 consumes 38.40 kWh of electricity per day. Based on the industrial electricity price of 0.4 yuan per kWh, the daily electricity consumption is 15.36 yuan.

With the revenue and the cost, we can calculate the net income of Antminer S9 for one day, which is 9.07 yuan. Now let's consider the cost of our equipment. The market price of Antminer S9 is about 4,000 yuan. We can calculate that it will take 14 months and 21 days for an Antminer S9 mining machine to pay back the cost based on the Bitcoin price of 70,000 yuan. Emmmm, for Xiaolu, this price-performance ratio is really not good.

Second-hand Ant S9 mining machine profit chart

So, I guess some students think that the cost of a new mining machine is too high, so we can buy a second-hand mining machine to mine. Emmm, if the second-hand price of Antminer S9 is about 2200, then I can get my money back in about 8 months, right? Xiaolu can only say that this is an ideal state . Generally, second-hand mining machines are quite unstable. After buying them, they are always disconnected or malfunctioning, which invisibly wastes computing power. Once the machine stops working due to a malfunction, it consumes a lot of money . Of course, the most fatal point is the life of the mining machine. We conservatively estimate that the life of a mining machine is three years (of course, it can be used longer if it is well maintained, but if it is used violently, then...) Then after the new machine pays back in 14 months, the remaining time minus the electricity bill is your pure income. At this time, you can just lie down and wait for mining to make a little money. But if you are unlucky and buy a second-hand mining machine. Emmm, generally speaking, the expected life is more than one year, plus the calculation examples of failure and disconnection, then the time your second-hand mining machine can bring you pure income is probably only a few months. To the little deer, it seems like he made a profit on the surface, but in fact he suffered a huge loss.

However , there are many unscrupulous merchants who will recycle second-hand mining machines, refurbish them, and then sell them as new mining machines. Once you buy this kind of mining machine, you can only wish you the best. Because this kind of mining machine is basically invisible from the appearance, but once it is put into use, you will start to worry. After all, the original and genuine brand mining machine is still quite stable, and basically it can bring you benefits smoothly after buying it. But the biggest problem with refurbished mining machines is that there are many problems. It is either disconnected or frequently fails. What should I do at this time? I can only defend my rights, but the time and energy cost of defending rights is also quite a headache. So Xiaolu suggests that if you want to buy a mining machine, you should go to the official website or a reliable and well-reputed platform.

There are still many brands of mining machines on the market, so Xiaolu just said that the payback time calculated by the Antminer S9 mining machine is still a bit long, and the cost performance is relatively low. Of course, this is Xiaolu's personal opinion. However, Xiaolu will also help you list the figures of several mainstream mining machines as a reference. Generally speaking, the payback time of mining machines on the market is mostly around 8 months. For example, the basic payback time of the Core Motion mining machine and Avalon mining machine in the figure below is about 8 months.

However, the world's largest mining machine manufacturer is Bitmain , so although the price of its Antminer is relatively high, and the payback time will be longer, but relatively speaking, its mining machine is quite excellent in performance and stability. For Xiaolu, its biggest disadvantage is that it is expensive. If it is compared with other products, it may be acceptable to be a little expensive, but if the mining machine is too expensive, it will affect its payback time and income.

XD Miner Profit Chart

Relatively speaking, the cost performance of the Innominator is relatively high among several brands. Compared with the Antminer, its performance is slightly lower and the calculation examples are somewhat volatile. However, it provides four modes, and everyone can freely switch to a more suitable mode according to the cost budget, currency price and market conditions, providing more choices for mining students.

Shenma mining machine profit chart

The biggest problem with Shenma mining machines is that they have high power consumption. However, the stability of early Shenma mining machines was a bit tangled, but after the launch of the Shenma all-in-one machine, its stability has increased sharply. It is said that the latest Shenma mining machine's computing power curve can actually run in a straight line... Therefore, if you don't mind the electricity consumption, the computing power and stability of the Shenma mining machine are still worth considering.

Avalon mining machine profit chart

But when it comes to stability, Avalon mining machine is famous for this. It is said that once the Avalon frame is installed, you can basically leave it alone. Although many mining machines claim this, it seems that it is the only one that can really do such a Buddhist maintenance. However, the disadvantage is that Avalon's mining machine is relatively precise, so it is more difficult to repair. And its mining machine has a high power, but the only drawback is that there are some power consumption problems. Similarly, if you don't mind the high electricity bill, then Avalon is also worth considering.

The above is Xiaolu's personal experience on the payback period of mining machines and the performance of several mainstream mining machines on the market. I hope it can help you. If you have any questions or want to know more details, you can also leave a message under the article to communicate with Xiaolu. Xiaolu is waiting for you to chat.