Mining Monday: Bitmain’s Antminer S21 – A Leap Towards Efficiency Amidst Competition and Challenges

In the Bitcoin mining industry, the recent announcement of Bitmain’s Antminer S21 and S21 Hydro has stirred anticipation and cautious optimism across the space. Revealed at Bitmain’s World Digital Mining Summit 2023 in Hong Kong, the S21 series promises to be the most powerful and efficient Bitcoin ASIC miner from Bitmain, marking a significant advancement in the mining industry.

The Antminer S21 Series:

Bitmain’s Antminer S21 series, including both air-cooled and hydro-cooled models, promises exceptional performance and efficiency. The air-cooled S21 model boasts a hashrate of 200 TH/s, efficiency of 17.5 J/TH, and wattage of 3500 W, while the hydro-cooled S21 model offers a hashrate of 335 TH/s, efficiency of 16 J/TH, and wattage of 5360 W. Bitmain plans to manufacture at least 50,000 units per month for the next eight months, potentially increasing production based on demand. The first shipments are expected in December, with the bulk shipping in Q1 and Q2 of 2024.

Historical Challenges with Bitmain Models:

Despite these advancements, the industry remains wary, recalling the past issues with the S17 and S19 XP series. Manufacturing defects and hardware errors have marred Bitmain’s reputation, necessitating a cautious approach towards the new S21 series. The industry is keen to observe the S21’s performance post-release, ensuring it lives up to its specifications without the hiccups that plagued its predecessors.

The Competitive Landscape:

In the competitive Bitcoin mining hardware market, Bitmain faces formidable adversaries. MicroBT’s announcement of the Whatsminer M60, set to be released at the Blockchain Life 2023 event in Dubai on October 24th, with a promised efficiency below 20W/T. Canaan just announced their new A1466 model, boasting a hashrate of 150 TH/s, power efficiency of 21.5 J/TH, and power consumption of 3230 W, along with the A1466l, their immersion cooled variant with 170T at an efficiency of 19.5 J/T, highlight the escalating competition. These developments underscore the importance of continuous innovation and improvement in the mining hardware sector, ensuring that miners have access to the most advanced and efficient equipment.

Whatsminer to reveal the M60 next month that promises 1X J/T

Importance of After-Sales Service and Pricing:

For Bitmain, enhancing its reputation is paramount. The industry’s expectations for robust after-sales service and competitive pricing are high, emphasizing Bitmain’s need to meet these standards to regain and maintain its market position. The Antminer S21 is launched with a promotional price of $14/TH for bulk orders, translating to $2,800 per unit for air-cooled models and $4,690 for hydro-cooled models, with prices expected to increase in future orders.

The Impact of Mining Efficiency on Profitability:

With the impending unprofitability post-halving, the need for efficient miners like the S21 and S21 Hydro is paramount. Bitcoin’s hashprice index is currently at an all time low of only $62/PH/day. The S21 series emerges as a potential beacon of profitability in the evolving landscape, promising enhanced performance and efficiency. Miners seeking to maintain profitability at average electric costs will find the S21 series to be a valuable addition to their mining operations, ensuring sustained performance and returns on investment.

Bitcoin Hashprice Index at ATL as seen on

As we conclude this edition of Mining Monday, the anticipation for the Bitmain S21 series is palpable, tinged with cautious optimism. The industry eagerly awaits the real-world performance and reliability of the S21 and S21 Hydro, hoping for a resurgence in profitability and efficiency in Bitcoin mining. Stay up to date with the daily updates in the cryptoverse and Bitcoin mining industry by following our AsicZ blog. For those interested in volume mining equipment, visit to view our full inventory with pricing updated on a daily basis as well as access to indispensable tools such as our profitability calculators. We also offer MaaS (Mining as a Service) with power rates lower than .03/kWh to keep you mining profitably under most any market conditions.


  1. “Bitmain Unveils High-Efficiency Bitcoin Miners, Signals Shift to Greener Practices”
  2. “Bitcoin miners focus on efficiency, renewable energy at World Digital Mining Summit”
  3. “Bitcoin Mining Enters a New Era of Efficiency and Sustainability”
  4. “What is the Antminer S21? Everything to Know About Bitmain’s Latest ASIC Miner”
  5. “WhatsMiner M60 Series is Coming”
Mining Monday: Bitmain’s Antminer S21 – A Leap Towards Efficiency Amidst Competition and Challenges