Bitmain Antminer S21 (200Th) Profitability and Best Prices

·

The Bitmain Antminer S21 (200Th) has quickly become one of the most talked-about ASIC miners in the Bitcoin mining community since its release in early 2024. With a powerful hashrate, competitive energy efficiency, and growing availability across global markets, this machine is attracting serious attention from both individual miners and large-scale mining operations.

In this comprehensive guide, we’ll break down everything you need to know about the Antminer S21, including its performance metrics, profitability potential, power consumption, pricing trends, and where to buy it at the best rates—without any promotional clutter or outdated data.

Overview of the Bitmain Antminer S21 (200Th)

The Bitmain Antminer S21 (200Th) is a high-performance ASIC miner specifically engineered for mining cryptocurrencies that use the SHA-256 algorithm, primarily Bitcoin (BTC) and Bitcoin Cash (BCH). As part of Bitmain’s latest generation of mining hardware, the S21 delivers an impressive maximum hashrate of 200 terahashes per second (Th/s) while maintaining a relatively efficient power draw of 3,500 watts (W).

This results in an energy efficiency rating of just 17.5 joules per terahash (J/TH)—placing it among the top-tier ASIC miners available today in terms of performance-to-power ratio.

👉 Discover how the Antminer S21 compares to other top-tier miners on the market.

Key Specifications

Understanding the technical details helps assess whether the Antminer S21 fits your mining setup and environmental conditions.

These specs make the S21 suitable for professional mining farms with proper ventilation and cooling systems due to its noise output and heat generation.

Mining Performance and Profitability

One of the most critical factors for any miner is profitability. While actual earnings depend heavily on electricity costs, network difficulty, and BTC price fluctuations, we can estimate daily returns under standard conditions.

Assuming:

Under these conditions, the Antminer S21 (200Th) generates approximately $12–$15 per day in gross revenue. After deducting electricity costs (~$6.80/day), net daily profit ranges between **$5.20 and $8.20**.

Annual net profit could reach $1,900–$3,000, depending on market dynamics and operational efficiency.

Keep in mind that profitability fluctuates with:

👉 Use real-time calculators to project your ROI with current BTC prices.

Coins You Can Mine with the Antminer S21

Thanks to its SHA-256 optimization, the Antminer S21 is compatible with several blockchain networks, including:

While BTC remains the most profitable option due to its high market value and network hash rate distribution, alternative coins like BCH can offer temporary advantages during price surges or reduced competition.

Recommended Mining Pools

Joining a reliable mining pool increases your chances of consistent payouts. Some of the top pools supporting SHA-256 mining include:

Choose a pool based on fee structure, payout method (PPS, PPLNS), uptime reliability, and geographic proximity for lower latency.

Where to Buy the Antminer S21 – Updated Pricing Guide

As of 2025, the Antminer S21 is widely available from trusted vendors across Asia, Europe, and North America. Prices vary significantly based on region, stock status (new vs. used), and shipping logistics.

Here’s a curated list of current market prices from reputable suppliers:

Prices below $3,000 are considered highly competitive given the miner’s capabilities. Buyers should verify warranty terms, shipping timelines, and import duties before purchasing.

Frequently Asked Questions (FAQ)

Q: Is the Bitmain Antminer S21 still profitable in 2025?
A: Yes, under favorable electricity rates (<$0.10/kWh) and stable BTC prices above $50,000, the S21 remains profitable with an estimated payback period of 12–18 months.

Q: What is the lifespan of the Antminer S21?
A: With proper maintenance and optimal operating conditions, ASIC miners like the S21 typically last 3–5 years before significant performance degradation occurs.

Q: Do I need a separate power supply unit (PSU)?
A: Most vendors sell the Antminer S21 with a compatible PSU included. Always confirm this before purchase to avoid unexpected costs.

Q: How noisy is the Antminer S21?
A: At 75 dB, it's comparable to a vacuum cleaner. It's not suitable for residential environments without soundproofing.

Q: Can I mine other algorithms with this device?
A: No. The Antminer S21 is built exclusively for SHA-256-based cryptocurrencies and cannot be reprogrammed for other algorithms like Scrypt or Ethash.

Q: Are there refurbished or used models worth buying?
A: Yes—used units priced around $2,400 can offer excellent value if they come with verification reports and remaining warranty.

Final Thoughts

The Bitmain Antminer S21 (200Th) stands out as a powerful and energy-efficient choice for serious Bitcoin miners in 2025. Its combination of high hashrate, solid efficiency, and increasing availability makes it a strong contender in the current mining landscape.

Whether you're upgrading your existing rig or launching a new operation, evaluating total cost of ownership—including electricity, cooling, and maintenance—is essential for maximizing returns.

👉 Start tracking your mining performance and optimize your setup today.