Essential Information

Antminer S9 is a classic bitcoin miner. Since its birth two years ago, it has been highly praised by the majority of miners and has become the most popular bitcoin miner in the world.S9 can be used not only to dig BTC and BCH, but also to dig the encrypted digital currency of other sha256 algorithms.Xiaobian got an S9 these two days and conducted a comprehensive evaluation on it. Next, let's look at the performance of S9!

Basic product data

Appearance and workmanship

Antminer S9 adopts the design of double fans and three calculation force plate miner. The body is formed as a whole. It adopts precision die-casting design and aluminum alloy materials to provide strong protection for the computing chip and improve the overall heat dissipation efficiency of the body.

From the top of the mining machine, it can be seen that S9 is composed of three force calculation boards. Each force calculation board has three pci-e6pin interfaces and three data lines connecting the control board from the force calculation board. 

From the front of the miner, you can see the configuration of IP address feedback button, network cable interface, reset button and status indicator.The front fan of the miner can also be seen from the front, so as to supply air from this side.From the back of the miner, you can see the cooling fan of the miner, and the miner blows out from this side.S9 adopts bit Continental's self-developed bm1387 chip. There are 63 chips on each computing board, and each chip is equipped with an independent heat sink.The overall internal structure of the mining machine is very tight. The interval extension of the heat dissipation module brings a larger heat dissipation area. At the same time, the interval also forms a unique air duct inside the mining machine, which can maximize the use of the fan and structural cavity to push the heat dissipation effect to the extreme.

Installation and commissioning

The power supply for this test uses the ant power supply apw3 + +, and the mine pool uses the ant mine pool under bit continent, which is connected according to the official video tutorial of ant mine machine. https://v.qq.com/x/page/l0560u1kh9z.html

Heat and noise

The Antminer PPLNs mode is adopted for mining. The test site is a meeting room with an area of about 30 square meters and the room temperature is 28 degrees. The heating and noise test is carried out after the miner operates for 24 hours.

10cm away from the outlet of Antminer S9, the measured noise of miner is 88DB, but the noise drops to 70dB more than 1m away.After closing the door, there was no obvious sound.

After 24 hours of operation, you can see that the temperature of S9 chip is about 80 degrees in the background of the miner, and the temperature is in the normal range.

Antminer S9 power

The official standard calculation force of Antminer s9-13.5t is 13.5T. In the actual test, the average value of the actual calculation force is about 13.8th/s, which is higher than the nominal value.In the actual test, the power of Antminer s9-13.5t is 1366w, which is also higher than the nominal value, and the power consumption per T is about 99w.

On the deadline (March 6, 2018), the price of bitcoin was 71253 yuan. According to the income model of ant mining pool PPLNs, the income of one S9 24 hours a day was 0.001btc, equivalent to 71 yuan.According to the calculation of 0.3 yuan per kilowatt hour, the daily electricity charge of S9 is 9.8 yuan, and the daily income is about 61 yuan.

Summary

Antminer S9 continues the Seiko quality of bit continent. The product runs stably without failure and is very convenient to install.In actual operation, the calculation force will be higher than the nominal calculation force.S9 is not noisy. After closing the door, there is basically no noise. Civil houses can also be used.And S9 can dig not only BTC, but also BCH. Buying S9 is a good mining choice!