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2022 NEW Antminer S19pro review

Aug 09,2022 | YESUN

 

Ant is commonly known as the mine tyrant, so today let’s take a look at the specific evaluation results of the Antminer S19 Pro.
At the end of February 2020, Bitmain released the S19 Pro mining machine with a rated computing power of 110T±3% and a wall power consumption of 3250W±5%. As of the end of May, the 19 series of mining machines have been delivered to various mining farms one after another. After the mining machine has been running stably for a period of time, our personnel arrived at a mine in central Inner Mongolia. After four days, the actual operation of the S19 Pro mining machine was measured on site.

 At the end of February 2020, Bitmain released the Antminer S19 Pro mining machine with a rated computing power of 110T±3% and a wall power consumption of 3250W±5%. As of the end of May, the 19 series of mining machines have been delivered to various mining farms one after another. After the mining machine has been running stably for a period of time, our personnel arrived at a mine in central Inner Mongolia. After four days, the actual operation of the S19 Pro mining machine was measured on site.

 

1. Local climate and mine inlet air temperature

According to historical weather data, from June to August 2015-2019, the annual maximum temperature records in the region were 32°C, 31°C, 36°C, 31°C, and 31°C. The mine is located in an industrial park, and the air flow is side-in and top-out. If the maximum ambient temperature in summer is calculated as 34°C, and according to the characteristics of the mine’s heat source, the maximum temperature of the air inlet to the factory building in summer should not exceed 37°C, passing through the water curtain. The air temperature should not exceed 31℃, and the relative humidity should be between 30-80%.


2. Mining machine introduction

The S19 Pro mining machine is designed with an integrated chassis power supply. The size of its bare metal is 370×195.5×290mm. The heat dissipation of the mining machine can be designed according to the layer height of the mine rack. The front and rear double-tube fans are designed. The field operation and maintenance personnel avoid accidental contact with the blades and cause injury, which protects the safety of the operation and maintenance personnel; the back of the fan is covered with a grille, which effectively prevents external particles from entering the high-speed rotating fan and hitting the hash board.

The voltage of a single fan is 12V, the current is 1.65A, the maximum speed is 6150rpm, and the maximum air volume is 197cfm. According to the change of the series-parallel characteristics of the fans, the parallel fan design on one side of the miner significantly increases the ventilation volume; the series design of the fans on both sides of the miner significantly enhances the resistance of the miner to environmental resistance, that is, the ventilation volume of the miner will not increase with the mine. The changes in the field environment fluctuated violently.

The internal computing power board of the mining machine uses a whole heat sink to dissipate heat. The heat sink is a streamlined design. Although the wind resistance cannot be effectively reduced, this heat sink design effectively increases the thermal diffusion area of ​​the chip, making the chip The generated heat can be evenly and quickly transferred to the heat sink and taken away by the wind in time.

3. Measured data of mining machine operation

The on-site personnel selected the mining machine under a certain position on the shelf for testing, and obtained the following data by monitoring the background.

The air inlet temperature of the S19 Pro mining machine is 23.1℃, the relative humidity is 70%, and the air outlet temperature is 38.8℃; the relative humidity is 32%, and the average air volume is 370cfm; the power outlet air temperature is 28.0℃. The overall power consumption of the S19pro mining machine is 3320W, and the mining machine control page shows that the average computing power is 111.8TH/s, so the power consumption ratio of the S19 mining machine is 29.69W/T. The space can be placed horizontally or vertically; the mass is 13.2kg.

The effective computing power of the S19 Pro on the mining pool side is also amazing. The microbit mining pool (ViaBTC) shows that the average effective computing power is about 111Th/s in the background. After connecting to the "Firepower Pool" and enabling the "Hourly Exchange" function, the profit is the highest. Compared with the traditional PPS+ model, the increase can reach 23.99%. The figure below shows the calculation of the income obtained by different accounts through ViaBTC.

The influence of air volume and air temperature changes on the operation of the mining machine

According to relevant statistics, 45% of electronic product damage is due to excessive temperature. The high temperature problem in the mine is mainly due to insufficient ventilation, which causes the temperature of the air outlet of the mining machine to rise. In order to obtain the operating status of the mining machine under different ventilation environments, the on-site personnel observe the change of the computing power of the mining machine by changing the air flow through the mining machine. The results obtained are as follows.

 When the temperature of the air inlet of the mining machine is fixed at 31℃, and the air volume of the mining machine is reduced from 370cfm to 190cfm, the computing power of the mining machine does not fluctuate significantly, and it still remains at about 111.4TH/s. Continue to reduce the air volume, the mining machine The computing power began to appear unstable. Further reduce the ventilation volume of the mining machine to 170cfm, and the mining machine will be protected from high temperature. Therefore, for this mine, the actual ventilation volume of each S19pro mining machine should not be less than 190cfm.

Under the corresponding different air volume, the temperature environment for running the miner is also different. As the most typical data indicator, the relationship between the air temperature at the air outlet of the mining machine and the computing power is shown in the figure below. It can be seen from the figure that the air temperature at the air outlet of the mining machine should not exceed 61℃ in actual operation.

The influence of the temperature fluctuation of the air outlet on the operation of the mining machine

In addition to the air temperature limit of the air outlet that the miner can withstand, the fluctuation degree of ambient temperature changes also has a certain impact on the operation of the miner. The on-site personnel increased the temperature of the air inlet of the mining machine from 22°C to 40°C at different times to observe the change of the mining machine's computing power, and finally obtained the following data.

It can be seen from the curve that the fluctuation of the inlet air temperature of the mining machine varies from 0 to 3.6°C/s, and the computing power of the mining machine changes slightly, which means that in the summer environment, the computing power of the mining machine is hardly affected by the temperature environment change.

The impact of environmental humidity changes on the operation of the mining machine

The on-site personnel observed the change of the mining machine's computing power by controlling the air inlet humidity of the mining machine, and finally obtained the mining machine's computing power with the humidity of the mining machine's air inlet. The computing power is 111.7-111.8TH/s, which is the normal operating computing power. This shows that the change of the relative humidity of the workshop in a short period of time has little effect on the operation of the mining machine.

commision:

Miners at different locations in the mine have large differences in the air flow field environment, and the air volume obtained by the mining machines is quite different, which directly affects the temperature of the air outlet of the mining machine. In order to keep the temperature of the air outlet of the mining machine within an appropriate range, the mine should calculate the air flow field of each machine position during the design process, and reduce the air inlet temperature of the mining machine in summer by designing a water curtain or other equipment. During operation, the distance between the mining machine and the water curtain should be greater than 2 meters to avoid water droplets splashing into the mining machine; the workshop should be kept clean, and the number of particles with a diameter of not less than 0.5 μm in the workshop environment should be ≤32.5 million particles/m3.

For the mine in this mining machine evaluation experiment, the ventilation layout is reasonable, the inlet air temperature is low, and the hot air output of the mining machine in summer does not exceed 47 °C, the operating mining machine has a good heat dissipation environment, and the relative humidity and dust particle concentration stay within the appropriate range.

4. Summary

 The integrated design of the S19pro makes the structure more compact and reasonable.

The thermal design of the mining machine is reasonable, and the combination of fans and heat sinks ensures good heat dissipation of the mining machine.

In the running state, the average computing power of the mining machine is 111.8TH/s, the power consumption is 3320W, and the actual air volume is 370cfm.

In summer, the air outlet of the mining machine can withstand wind temperature up to 61°C, and the relative humidity range is above 30-90%, which greatly improves the adaptability of the mining machine to the mining farm.

No matter how the market is, mining and hoarding coins are still good, and the overall trend will continue to rise. Anyone who wants to know more about mining can communicate with the editor on Email:support@yesune.com.

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