Bitmain's Antminer Series: A Look at Bitcoin Mining's Most Iconic Machines

Mining hardware manufacturers continually push for greater processing power in new models. Bitmain, a key industry player, has led this endeavor since its initial Antminer, the Antminer S3, launched in July 2014. This began a series of powerful mining machines engineered to handle substantial hashes using the SHA-256 algorithm.

Bitmain's Antminer series has played a pivotal role in the mining sector, elevating industry standards and expanding processing capabilities. These miners have significantly contributed to the transformation of Bitcoin mining from a niche pursuit into a thriving and industrialized field. In this article, we'll explore the history, features, technical specifications, and the profound impact of Bitmain's Antminer series on Bitcoin mining, highlighting how these machines continue to shape the industry landscape.

History and Development

Bitmain was founded in 2013 and quickly became one of the world's largest manufacturers of Bitcoin mining hardware. Over the years, Bitmain has released a series of powerful and efficient mining machines, including the Antminer S1, S7, S9, T9, S15, and T15. These machines helped to make ASICs more accessible and profitable for miners.

In 2013, Bitmain released the Antminer S1. This landmark miner marked Bitmain's entry into the market and laid the groundwork for the future. The Antminer S1, an ASIC device tailored for Bitcoin mining, represented a significant leap in efficiency and performance compared to early GPU mining rigs.

Antminer S1 first-generation:
Power: 360W
Hash Rate: 180 GH/s
Release Date: 2013

Fast forward to 2020, Bitmain released the S19 series, which includes the S19, S19 Pro, and S19j Pro models. These machines were the first to use 7nm chips, reducing the energy cost required to mine Bitcoin. As a comparison, the S9 uses 16nm and was the most used ASIC on the market as recently as 2018.

Bitmain continues to raise the bar for the ASIC industry in 2024 with the release of the Antminer S21 series. This new lineup includes the Antminer S21 and the Antminer S21 Hydro, equipped with cutting-edge 5nm chips. The Antminer S21 boasts an impressive hashrate of 200Th/s while consuming 3550 watts of power, making it a formidable addition to Bitmain's catalog. On the other hand, the Antminer S21 Hydro takes mining to the next level with a staggering hashrate of 335Th/s, albeit with a higher power consumption of 5360 watts. Notably, the S21 Hydro model introduces a hydro cooling system, allowing the machine to push more power through the chips.

All Bitmain Sha-256 Bitcoin Miner's efficiency

Types, Series & Models

Antminer Types: Hydro & Air

The distinction between the air-cooled and hydro models of Bitmain's Antminer series lies in their cooling methods and overall efficiency. Hydro models, like the Antminer S21 Hyd and S19 Hydro, stand out as the most powerful in terms of hashrate (TH) and offer slightly better energy efficiency measured in joules per terahash (J/TH) compared to their air-cooled counterparts. This enhanced efficiency can translate into lower operational costs for miners.

However, it's crucial to note that hydro models come with additional considerations and costs. Operating hydro miners requires specialized infrastructure, such as cooling towers and dedicated systems, to effectively manage the water-based cooling system. Miners must consider the added costs and operational complexities of these infrastructure needs. When choosing between air-cooled and hydro models, environmental conditions, operational scale, and budget constraints become crucial.

Bitmain Antminer hydro and air-cooled machines

On this performance chart, the dark blue areas represent Bitmain's hydro-cooled Antminer models, while the light blue regions represent the air-cooled counterparts. Despite the dark blue areas indicating higher total hash rates for the hydro models, both hydro and air-cooled models exhibit similar energy efficiency when measured in joules per terahash (J/TH).

A deeper comparison can be made between the Hydro and Air-cooled between the years 2020 and 2024. On the chart below, the J/th efficiency is on the Y axis while the watts are the size of the circle, and the color is hydro or air-cooled. Hydro machines can produce more TH by pushing more watts through the chip. The S19XP is the first time an Antminer Hydro machine has meaningfully greater efficiency than the base, air-cooled model. Although the new S21 Hydro model isn't out yet, the efficiency will be much higher than that of the air-cooled.

Bitmain antminer hydro and air-cooled comparison in efficiency (Joules/Th)

With all the comparisons between Hydro and Air-cooled, it is worth stating that each machine has its ups and downs compared to the specific location and use case. Some hydros may not be well suited for below-freezing temperatures, whereas air-cooled has an advantage in this climate. On the other hand, a facility in a more temperate location could take advantage of hydro machines that get more consistent cooling to the chips. In the mining world, every decision carries substantial financial implications, and inevitable missteps can result in significant losses, potentially rendering equipment irreparable and funds permanently lost.

Series (T & S)

The S series stands out for its exceptional hashing power and energy efficiency, leading the industry for a reason. They are machines that everyone knows as the flagship models.

On the other hand, the T series, exemplified by models like the Antminer T19 and T17, offers an alternative approach. While these models provide competitive hash rates, they are slightly less power-efficient than their S series counterparts. Miners who opt for the T series prioritize cost-effectiveness and may not be overly concerned with marginally higher power consumption. This choice can be especially advantageous in regions with favorable electricity rates, where the lower upfront cost of T series models can offset their relatively higher energy consumption.

Bitmain Antminer Series Comparison by Efficiency


Bitmain's extensive line of Antminer models encompasses many options for Bitcoin miners. For instance, the Antminer S9, launched on June 1, 2016, was a pivotal model known for its efficiency in Bitcoin mining. Sporting a hashrate of 14Th/s and consuming 1372 watts of power, it was a notable choice for miners looking to participate in Bitcoin's proof-of-work network.


In contrast, the Antminer S19 series, introduced in May 2020, signified a leap in technological advancement with the use of 7nm chips. These models, such as the Antminer S19 Pro, provided a substantial hashrate of 110Th/s while reducing power consumption to 3250 watts. This reduced power consumption made the S19 series a game-changer in terms of energy efficiency and mining profitability.


Scheduled for release in March 2024, the Antminer S21 series signifies a monumental advancement in Bitcoin mining hardware. These models, like the Antminer S21 and S21 Hydro, utilize 5nm chips to deliver exceptional performance. The Antminer S21 boasts a formidable 200Th/s hashrate while consuming 3550 watts, while the Antminer S21 Hydro offers an astonishing 335Th/s hashrate with slightly higher power consumption at 5360 watts.

Bitmain Antminer Growth in Hashrate by model (ASIC)

Maintenance and Manufacturing Issues

Antminer S19 Series:

The Antminer S19 series, a flagship offering from Bitmain, has been known for its exceptional mining performance. However, some miners have reported challenges related to compatibility with power supply units (PSUs), underscoring the importance of selecting compatible and high-quality PSUs. Efficient heat dissipation and proper cooling are paramount for this series, as overheating can lead to hardware malfunctions. Routine fan maintenance is essential to prevent fan failures that can disrupt mining operations. Ensuring the stability of dashboards and addressing connectivity issuesis also crucial for maximizing the lifespan and profitability of the Antminer S19 series.

Antminer S17 Series:

Miners may encounter common issues such as hash board problems, hash board detection issues, program errors, or power supply problems. Resolving these problems can involve re-plugging flat cables and seeking professional repair services. Despite their impressive performance, the Antminer S17 series demands attention to certain critical aspects. Compatibility with the power supply unit is crucial, necessitating the selection of reliable power sources to prevent disruptions. Effective heat management, through regular cleaning and proper ventilation, is essential for preventing overheating and extending hardware lifespan. Monitoring fan performance is also vital to prevent disruptions caused by fan failures. Conducting routine hardware inspections is critical to identifying and addressing potential issues promptly, ensuring the continued success of the Antminer S17 series in mining operations.

Antminer T19 Series:

Bitmain's Antminer T19 series, known for its balance between hashrate and energy efficiency, has also faced maintenance considerations. Miners should prioritize selecting PSUs that meet these models' power requirements. Adequate cooling and ventilation are essential to prevent overheating and ensure stable operation. Regular firmware updates can address known issues and enhance overall performance. Miners should conduct routine inspections, including hashboard and connectivity checks, to maintain the reliability and profitability of the Antminer T19 series.

Antminer S9 Series:

The Antminer S9 series, a pioneering model in the Bitcoin mining industry, has experienced its share of challenges. PSU compatibility and heat management remain critical factors for these models. Cleaning and maintaining fans are essential to prevent fan failures that can disrupt mining operations. Routine hardware inspections are advisable to promptly address any issues with hashboards or connectivity. As these models age, miners should exercise vigilance in ensuring their continued reliability and profitability.

Antminer S7 Series:

The Antminer S7 series, an earlier iteration, has faced challenges related to aging components. While PSU selection and heat management remain relevant, miners should know that hardware components may become less reliable. Maintenance and inspections become increasingly crucial to mitigate hardware wear and tear risks. Miners should exercise caution and consider upgrading to more recent models as these older units end their operational lifespan.

Which Is The Best Modern Machine?

The Antminer S19 series has established itself as one of the most modern and robust miners in the Bitcoin mining industry. With advanced technological features and improved efficiency, it has become a favored choice among miners. These models are known for their reliability and lower incidence of problems than earlier iterations. However, the mining landscape is ever-evolving, and new challenges and opportunities emerge as the industry progresses.

The release of the S21 series brings anticipation and curiosity as miners look forward to experiencing its performance and evaluating its potential. While the S19 series has set a high standard, the S21 series represents a new chapter in the ongoing story of Bitcoin mining, and the mining community will closely observe its success.

Stay tuned for more updates! If you have any questions, contact us on Discord, Twitter, or send us an email!

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