The cryptocurrency mining landscape is evolving rapidly, and with the recent announcement of Bitmain’s upcoming Antminer S21 series—expected to launch in 2023—many miners are reevaluating their current setups. While the S21 promises cutting-edge performance, its premium price point may push budget-conscious operators toward proven alternatives. One such option is the Bitmain Antminer S19 PRO, a powerhouse that has stood the test of time since its 2020 release.
Even years after launch, the S19 PRO remains a top contender in the ASIC mining world. As newer models hit the market, prices for the S19 PRO are likely to drop, creating a compelling opportunity for miners seeking high performance at a more accessible cost. But is it still profitable in 2025? Let’s explore its key features, profitability metrics, strengths, and drawbacks to help you make an informed decision.
What Is the Bitmain Antminer S19 PRO?
The Bitmain Antminer S19 PRO is a high-performance ASIC miner designed specifically for Bitcoin (BTC) mining. Released in May 2020, it quickly became a favorite among professional mining farms due to its exceptional hash rate and energy efficiency.
With a maximum hash rate of 110 TH/s and an energy efficiency of 29 J/TH, the S19 PRO outperforms many of its predecessors and even competes with some newer models. It operates using two APW7 power supply units and requires careful thermal management due to its high power draw of 3,250 watts.
👉 Discover how next-gen mining hardware compares to legacy workhorses like the S19 PRO.
Key Specifications:
- Hash Rate: 110 TH/s (±5%)
- Power Consumption: 3,250W
- Energy Efficiency: 29 J/TH
- Power Supply: Dual APW7 PSUs
- Dimensions: 352 mm × 130 mm × 187 mm
- Operating Temperature: 0°C to 40°C
Designed for continuous operation, the S19 PRO is built to withstand the rigors of large-scale mining environments. Its durability and consistent output have cemented its reputation as one of the most reliable ASIC miners on the market.
Is the S19 PRO Still Profitable in 2025?
Profitability depends on several dynamic factors: electricity costs, Bitcoin price, network difficulty, and hardware expenses. Let’s break them down.
Hardware and Electricity Costs
The initial investment for a used or refurbished S19 PRO ranges from $3,000 to $6,000 in 2025—significantly lower than its original $15,000 retail price. This depreciation improves ROI potential for new buyers.
Electricity remains the largest ongoing cost. At $0.10 per kWh**, running the miner 24/7 costs approximately **$7.80 per day or $234 monthly. Miners in regions with cheaper power—such as those using hydroelectric, solar, or geothermal sources—can drastically reduce operating costs and boost net profits.
Bitcoin Price and Network Difficulty
As of 2025, Bitcoin’s price fluctuates between $45,000 and $70,000, influencing daily mining revenue. Assuming a stable network difficulty and BTC at $60,000, the S19 PRO can generate roughly **$25–$35 per day** in gross revenue.
However, Bitcoin’s mining difficulty continues to rise—historically by 15–20% annually—due to increasing competition. While the S19 PRO’s efficiency helps mitigate declining returns, long-term profitability requires monitoring these trends closely.
Block Rewards and Halving Impact
The block reward was reduced to 3.125 BTC per block after the April 2024 halving. This cut mining rewards in half, directly affecting income potential. Despite this, strong demand and rising BTC prices have helped maintain profitability for efficient machines like the S19 PRO.
Core Advantages of the Antminer S19 PRO
High Hash Rate for Competitive Mining
At 110 TH/s, the S19 PRO delivers elite-level computational power. This high hashrate enables faster block solving and more frequent payouts compared to older or less powerful models. For miners operating at scale, this translates into steady income generation.
Industry-Leading Energy Efficiency
With an efficiency rating of 29 J/TH, the S19 PRO ranks among the most energy-efficient ASIC miners ever built. Lower joules per terahash mean less wasted electricity and reduced heat output—key factors in minimizing operational costs and extending hardware lifespan.
Strong Resale Value
Bitmain miners retain value exceptionally well in the secondary market. Even after years of use, a well-maintained S19 PRO can fetch 40–60% of its original price, offering investors flexibility and risk mitigation should they choose to upgrade or exit mining.
Proven Durability and Reliability
Built with industrial-grade components, the S19 PRO is engineered for longevity. Under optimal conditions—proper cooling, stable power, and regular maintenance—it can remain functional for 5 to 10 years. This durability makes it ideal for long-term mining strategies.
Challenges and Limitations
High Power Requirements
The 3,250W power draw demands a robust electrical infrastructure. Home miners may face challenges without dedicated circuits or commercial-grade power setups. Additionally, cooling systems must be scaled accordingly to prevent overheating.
Noise Levels
Operating at around 75 decibels, the S19 PRO produces noise comparable to a loud vacuum cleaner. This makes it unsuitable for residential spaces unless placed in soundproof enclosures or remote facilities.
👉 Learn how top mining farms optimize noise and heat management across large fleets.
Declining Profit Margins Over Time
While profitable today, mining returns naturally erode over time due to rising difficulty and hardware wear. The S19 PRO will eventually require replacement by more advanced models to maintain competitiveness.
Frequently Asked Questions (FAQ)
Q: Can I mine Bitcoin profitably with a single S19 PRO at home?
A: It’s possible if you have low electricity costs (<$0.08/kWh) and adequate cooling/noise control. However, profitability improves significantly when operating multiple units at scale.
Q: How long does it take to break even on an S19 PRO?
A: With a purchase price of $5,000 and daily profits of $25–$30 (after electricity), ROI typically occurs within 6 to 12 months, depending on market conditions.
Q: Does the S19 PRO support mining other cryptocurrencies?
A: No. The S19 PRO is optimized exclusively for SHA-256 algorithms, making it suitable only for Bitcoin and Bitcoin Cash mining.
Q: What maintenance does the S19 PRO require?
A: Regular cleaning of dust filters, fan inspection every 3–6 months, and firmware updates are recommended to ensure peak performance and longevity.
Q: Is cloud mining a better alternative than buying an S19 PRO?
A: Owning physical hardware gives you full control over operations and profits. Cloud mining often involves hidden fees and lower transparency, making direct ownership more reliable in the long run.
Q: Will the S19 PRO become obsolete soon?
A: Not immediately. While newer models offer higher efficiency, the S19 PRO remains competitive through 2025—especially in low-cost energy environments.
Final Thoughts
The Bitmain Antminer S19 PRO remains a formidable player in the Bitcoin mining ecosystem. Its combination of high hashrate, energy efficiency, durability, and strong resale value makes it a smart choice for both individual enthusiasts and commercial operators.
While challenges like noise, power demands, and declining margins exist, strategic planning—such as securing cheap electricity and optimizing cooling—can extend its profitable lifespan well into the future.
As newer models emerge and market dynamics shift, staying informed is crucial. Whether you're upgrading your fleet or entering mining for the first time, the S19 PRO offers a proven foundation for success.
👉 Stay ahead of mining trends and maximize your returns with expert insights.