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Top 10 Bitcoin Mining ASIC Machines for 2025

If you’re going to mine bitcoin, you’re going to need a Bitcoin mining ASIC. In this blog post, we profile some of the best Bitcoin mining ASICs available as we turn the corner into 2025. Bitcoin mining can be a great way to gain bitcoin exposure, BUT it’s also highly competitive and can be risky. […]

If you’re going to mine bitcoin, you’re going to need a Bitcoin mining ASIC.

In this blog post, we profile some of the best Bitcoin mining ASICs available as we turn the corner into 2025.


Bitcoin mining can be a great way to gain bitcoin exposure, BUT it’s also highly competitive and can be risky. Hashing with the right Bitcoin mining ASIC can make all the difference.

As shown in our most recent quarterly hashprice forecast model report — exclusively available for Hashrate Index Premium members — handling future increases in network difficulty will be crucial for mining operations as Bitcoin adoption continues around the world.

Q4 2024 Hashrate, Difficulty, and Hashprice Projections Report

As we enter a new year of mining, we expect machines optimized for potential upgrades or better efficiency and specs to remain profitable for longer.

Here are the models we cover for this year’s best Bitcoin mining ASICs:

  1. Bitmain Antminer S21 Pro
  2. MicroBT Whatsminer M60S
  3. Bitmain Antminer S19j Pro
  4. MicroBT Whatsminer M30S++
  5. Canaan Avalon A1566
  6. Bitmain Antminer S21 XP Hydro
  7. Bitmain Antminer S19k Pro
  8. MicroBT Whatsminer M66S Immersion
  9. Canaan Avalon A1566 Immersion
  10. Bitdeer Sealminer A2

The contents of this article does not constitute financial advice. If readers are interested in buying and operating Bitcoin mining machines, they should do their own research and consult a trusted advisor.

If you would like to learn more about any of these Bitcoin mining machines, including their specifications and associated payback periods, you can visit our ASIC directory.


The Antminer S21 Pro is one of the most powerful air-cooled Bitcoin mining ASIC on the market today.

Overview

The S21 Pro boasts a hashrate of 234 TH/s with an efficiency of 15 J/TH, consuming around 3510 watts. It was introduced in March 2024. Since this model is still fairly new, supply is largely concentrated among large-scale professional mining companies.

At current cost conditions and mining economics, this model entails a daily profitability profile of $7.80 (assuming an electricity cost of 6 cents per kWh).

Firmware

Firmware is specialized software that Bitcoin miners can use to improve a Bitcoin mining ASIC’s performance. Firmware essentially enables a miner to “jail break” their machines, unlocking custom configurations between hashrate production, energy efficiency, and power consumption.

The Antminer S21 Pro comes with stock firmware, but there are also third-party firmware options that can enhance the miner’s performance.

Please note: using third-party firmware can void a machine’s warranty.

Luxor’s Antminer firmware, LuxOS, supports the S21 Pro. You can learn more about it here.

How to buy

Large-scale miners can buy the Antminer S21 Pro directly from its manufacturer, Bitmain. Other miners can source them from Luxor’s ASIC Shop at a current price of $23.87/TH.


The Whatsminer M60S is another one of the most powerful air-cooled Bitcoin mining ASIC on the market today.

Overview

The M60S boasts a hashrate of 170-186 TH/s with an efficiency of 18.5 J/TH, consuming around 3441 watts. It was introduced in October 2023.

At current cost conditions and mining economics, this model entails a daily profitability profile of $5.22 (assuming an electricity cost of 6 cents per kWh).

Firmware

The M60S comes with stock firmware, however it doesn’t have third-party firmware available because of its hashboard design. Bitcoin mining firmware specialists are working hard to crack this nut though, so stay tuned.

How to buy

Large-scale miners can buy the Antminer M60S directly from its manufacturer, MicroBT at a current price of $18.30/TH. These miners can also be sourced from Luxor’s ASIC Shop.


The Antminer S19j Pro has replaced its predecessor, the Antminer S9, as the mining industry’s humble and reliable hasher.

Overview

The S19j Pro boasts a hashrate of 100 TH/s with an efficiency of 29.5 J/TH, consuming around 2950 watts. It was introduced in June 2021. This model is from the previous generation of ASICs, however used machines have recently been in high demand because of its favourable cost coupled with an improving hashprice environment, resulting in some of the best payback periods around at the moment.

At current cost conditions and mining economics, this model entails a daily profitability profile of $1.22 (assuming an electricity cost of 6 cents per kWh).

Firmware

The Antminer S19j Pro comes with stock firmware, but there are also third-party firmware options that can enhance the miner’s performance.

Luxor’s Antminer firmware, LuxOS, supports the S19j Pro.

How to buy

Since these miners are old-gen, they can only be sourced from secondary markets such as Luxor’s Request-for-Quote Marketplace.


Another older generation ASIC, the Whatsminer M30S++ is a coveted Bitcoin mining ASIC from MicroBT.

Overview

The M30S++ boasts hashrate of 100-112 TH/s with an efficiency of 134J/TH, consuming around 3400 watts. It was introduced in October 2020. This model is from the previous generation of ASICs, however has benefited from recent improvements in hashprice.

At current cost conditions and mining economics, this model entails a daily profitability profile of $1.13 (assuming an electricity cost of 6 cents per kWh).

Firmware

The M30S++ comes with stock firmware, however it doesn’t have third-party firmware available because of its hashboard design.

How to buy

Since these miners are old-gen, they can only be sourced from secondary markets such as Luxor’s Request-for-Quote Marketplace.


Canaan’s Avalonminer A15 series of air-cooled Bitcoin mining ASICs is a fierce competitor in the mining market.

Overview

The Avalon A1566 boasts a hashrate of 185 TH/s with an efficiency of 19.9 J/TH, consuming around 3681 watts. It was introduced in Q4 2024. Since this model is still fairly new, supply is largely concentrated among large-scale professional mining companies.

At current cost conditions and mining economics, this model entails a daily profitability profile of $4.82 (assuming an electricity cost of 6 cents per kWh).

Firmware

The A1566 comes with stock firmware, however it doesn’t have third-party firmware available.

How to buy

Large-scale miners can buy the A1566 directly from its manufacturer, Canaan. Other miners can source them from Luxor’s ASIC Shop at a current price of $19.51/TH.


The Antminer S21 XP Hydro is the most powerful Bitcoin mining ASIC currently available.

Overview

The S21 XP Hydro boasts a hashrate of 473 TH/s with an efficiency of 12 J/TH, consuming around 5676 watts. It was introduced in June 2024. Since this model is still fairly new, supply is largely concentrated among large-scale professional mining companies.

At current cost conditions and mining economics, this model entails a daily profitability profile of $17.70 (assuming an electricity cost of 6 cents per kWh).

Firmware

Luxor’s Antminer firmware, LuxOS, does not support the S21 XP Hydro (yet).

How to buy

Large-scale miners can buy the Antminer S21 XP Hydro directly from its manufacturer, Bitmain.


The Antminer S19k Pro is highly similar to its sibling, the Antminer S19j Pro, as another humble hasher for the mining industry.

Overview

The S19k Pro boasts hashrate of 120 TH/s with an efficiency of 23 J/TH, consuming around 2760 watts. It was introduced in September 2023. This model is from the previous generation of ASICs, however has benefited from recent improvements in hashprice.

At current cost conditions and mining economics, this model entails a daily profitability profile of $2.59 (assuming an electricity cost of 6 cents per kWh).

Firmware

The Antminer S19k Pro comes with stock firmware, but there are also third-party firmware options that can enhance the miner’s performance.

Luxor’s Antminer firmware, LuxOS, supports the S19k Pro.

How to buy

Since these miners are old-gen, they can only be sourced from secondary markets such as Luxor’s Request-for-Quote Marketplace. Miners can also source them from Luxor’s ASIC Shop at a current price of $10.76/TH.


The immersion-cooled Whatsminer M66S is one of MicroBT’s most powerful Bitcoin mining ASIC on the market today.

Overview

The M66S Immersion boasts a hashrate of 298 TH/s with an efficiency of 18.5 J/TH, consuming around 5513 watts. It was introduced in October 2023. Since this model is fairly complex to operate, supply is largely concentrated among large-scale professional mining companies.

At current cost conditions and mining economics, this model entails a daily profitability profile of $8.43 (assuming an electricity cost of 6 cents per kWh).

Firmware

The M66S Immersion comes with stock firmware, however it doesn’t have third-party firmware available because of its hashboard design.

How to buy

Large-scale miners can buy the M66S Immersion directly from its manufacturer, MicroBT.


The immersion-cooled Avalon A1566 is one of Canaan’s most powerful Bitcoin mining ASIC on the market today.

Overview

The A1566 Immersion boasts a hashrate of 249 TH/s with an efficiency of 19 J/TH, consuming around 4500 watts. It was introduced in June 2024. Since this model is fairly complex to operate, supply is largely concentrated among large-scale professional mining companies.

At current cost conditions and mining economics, this model entails a daily profitability profile of $7.22 (assuming an electricity cost of 6 cents per kWh).

Firmware

The A1566 Immersion comes with stock firmware, however it doesn’t have third-party firmware available.

How to buy

Large-scale miners can buy the A1566 Immersion directly from its manufacturer, Canaan.


The Sealminer A2 is a highly anticipated Bitcoin mining ASIC designed and manufactured by the publicly traded Bitcoin mining company Bitdeer (NASDAQ: BTDR). This machine is about to enter the mining market as a new player in town.

Overview

The Sealminer A2 boasts a hashrate of 226 TH/s with an efficiency of 16.5 J/TH, consuming around 3729 watts. It was introduced in November 2024. Since this model is still fairly new and proprietary, supply is highly limited among Bitdeer and its customer base.

At current cost conditions and mining economics, this model entails a daily profitability profile of $7.05 (assuming an electricity cost of 6 cents per kWh).

Firmware

The Sealminer A2 comes with stock firmware, however it doesn’t have third-party firmware available.

How to buy

Large-scale miners can buy the Sealminer A2 directly from its manufacturer, Bitdeer.


Mining Bitcoin in 2025

The bitcoin mining ASICs we highlight in this blog post are the best options available today. Wether you’re new to Bitcoin mining, a veteran, a hobbyist miner, or a professional, these miners will provide you with the hashes you want to secure the blockchain and earn bitcoin in return.

All that said, be sure to do your research and choose a machine that’s right for you. If you are looking to purchase, check out Luxor’s ASIC Shop for the best prices and seamless shipping.

Happy hashing!

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Microsoft will invest $80B in AI data centers in fiscal 2025

And Microsoft isn’t the only one that is ramping up its investments into AI-enabled data centers. Rival cloud service providers are all investing in either upgrading or opening new data centers to capture a larger chunk of business from developers and users of large language models (LLMs).  In a report published in October 2024, Bloomberg Intelligence estimated that demand for generative AI would push Microsoft, AWS, Google, Oracle, Meta, and Apple would between them devote $200 billion to capex in 2025, up from $110 billion in 2023. Microsoft is one of the biggest spenders, followed closely by Google and AWS, Bloomberg Intelligence said. Its estimate of Microsoft’s capital spending on AI, at $62.4 billion for calendar 2025, is lower than Smith’s claim that the company will invest $80 billion in the fiscal year to June 30, 2025. Both figures, though, are way higher than Microsoft’s 2020 capital expenditure of “just” $17.6 billion. The majority of the increased spending is tied to cloud services and the expansion of AI infrastructure needed to provide compute capacity for OpenAI workloads. Separately, last October Amazon CEO Andy Jassy said his company planned total capex spend of $75 billion in 2024 and even more in 2025, with much of it going to AWS, its cloud computing division.

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John Deere unveils more autonomous farm machines to address skill labor shortage

Join our daily and weekly newsletters for the latest updates and exclusive content on industry-leading AI coverage. Learn More Self-driving tractors might be the path to self-driving cars. John Deere has revealed a new line of autonomous machines and tech across agriculture, construction and commercial landscaping. The Moline, Illinois-based John Deere has been in business for 187 years, yet it’s been a regular as a non-tech company showing off technology at the big tech trade show in Las Vegas and is back at CES 2025 with more autonomous tractors and other vehicles. This is not something we usually cover, but John Deere has a lot of data that is interesting in the big picture of tech. The message from the company is that there aren’t enough skilled farm laborers to do the work that its customers need. It’s been a challenge for most of the last two decades, said Jahmy Hindman, CTO at John Deere, in a briefing. Much of the tech will come this fall and after that. He noted that the average farmer in the U.S. is over 58 and works 12 to 18 hours a day to grow food for us. And he said the American Farm Bureau Federation estimates there are roughly 2.4 million farm jobs that need to be filled annually; and the agricultural work force continues to shrink. (This is my hint to the anti-immigration crowd). John Deere’s autonomous 9RX Tractor. Farmers can oversee it using an app. While each of these industries experiences their own set of challenges, a commonality across all is skilled labor availability. In construction, about 80% percent of contractors struggle to find skilled labor. And in commercial landscaping, 86% of landscaping business owners can’t find labor to fill open positions, he said. “They have to figure out how to do

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2025 playbook for enterprise AI success, from agents to evals

Join our daily and weekly newsletters for the latest updates and exclusive content on industry-leading AI coverage. Learn More 2025 is poised to be a pivotal year for enterprise AI. The past year has seen rapid innovation, and this year will see the same. This has made it more critical than ever to revisit your AI strategy to stay competitive and create value for your customers. From scaling AI agents to optimizing costs, here are the five critical areas enterprises should prioritize for their AI strategy this year. 1. Agents: the next generation of automation AI agents are no longer theoretical. In 2025, they’re indispensable tools for enterprises looking to streamline operations and enhance customer interactions. Unlike traditional software, agents powered by large language models (LLMs) can make nuanced decisions, navigate complex multi-step tasks, and integrate seamlessly with tools and APIs. At the start of 2024, agents were not ready for prime time, making frustrating mistakes like hallucinating URLs. They started getting better as frontier large language models themselves improved. “Let me put it this way,” said Sam Witteveen, cofounder of Red Dragon, a company that develops agents for companies, and that recently reviewed the 48 agents it built last year. “Interestingly, the ones that we built at the start of the year, a lot of those worked way better at the end of the year just because the models got better.” Witteveen shared this in the video podcast we filmed to discuss these five big trends in detail. Models are getting better and hallucinating less, and they’re also being trained to do agentic tasks. Another feature that the model providers are researching is a way to use the LLM as a judge, and as models get cheaper (something we’ll cover below), companies can use three or more models to

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OpenAI’s red teaming innovations define new essentials for security leaders in the AI era

Join our daily and weekly newsletters for the latest updates and exclusive content on industry-leading AI coverage. Learn More OpenAI has taken a more aggressive approach to red teaming than its AI competitors, demonstrating its security teams’ advanced capabilities in two areas: multi-step reinforcement and external red teaming. OpenAI recently released two papers that set a new competitive standard for improving the quality, reliability and safety of AI models in these two techniques and more. The first paper, “OpenAI’s Approach to External Red Teaming for AI Models and Systems,” reports that specialized teams outside the company have proven effective in uncovering vulnerabilities that might otherwise have made it into a released model because in-house testing techniques may have missed them. In the second paper, “Diverse and Effective Red Teaming with Auto-Generated Rewards and Multi-Step Reinforcement Learning,” OpenAI introduces an automated framework that relies on iterative reinforcement learning to generate a broad spectrum of novel, wide-ranging attacks. Going all-in on red teaming pays practical, competitive dividends It’s encouraging to see competitive intensity in red teaming growing among AI companies. When Anthropic released its AI red team guidelines in June of last year, it joined AI providers including Google, Microsoft, Nvidia, OpenAI, and even the U.S.’s National Institute of Standards and Technology (NIST), which all had released red teaming frameworks. Investing heavily in red teaming yields tangible benefits for security leaders in any organization. OpenAI’s paper on external red teaming provides a detailed analysis of how the company strives to create specialized external teams that include cybersecurity and subject matter experts. The goal is to see if knowledgeable external teams can defeat models’ security perimeters and find gaps in their security, biases and controls that prompt-based testing couldn’t find. What makes OpenAI’s recent papers noteworthy is how well they define using human-in-the-middle

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