Product Overview
Bitmain’s Antminer S21 Pro is a formidable force in the Bitcoin mining industry. This SHA-256 ASIC miner, which was introduced in April 2024, has an amazing 15 J/TH efficiency and can process data at 234 TH/s while using only 3,510W of power. With four high-speed fans that keep it cool under heavy loads, this machine is designed for maximum profitability, whether you’re a farm owner or a lone miner.
Key Specifications
| Feature | Details |
|---|---|
| Manufacturer | Bitmain |
| Model | S21 Pro |
| Algorithm | SHA-256 |
| Hashrate | 234 TH/s (±3%) |
| Power Consumption | 3,510W (±5%) |
| Efficiency | 15 J/TH (±5%) |
| Cooling | 4x High-Speed Fans |
| Noise Level | 76 dB |
| Dimensions | 400 x 195 x 290 mm |
| Weight | 14.2 kg |
| Input Voltage | 220–277V AC |
| Supported Coins | BTC, BCH, BSV |
Performance Metrics
| Metric | Value |
|---|---|
| Daily Profit* | $30–$45 (varies) |
| Monthly ROI | ~12–18 months |
| Power Cost (at $0.10/kWh) | ~$8.42/day |
| Noise Level | 76 dB (loud—needs isolation) |
Who Should Buy This?
| User Type | Why It’s a Fit |
|---|---|
| Small-Scale Miners | Perfect for home miners with decent power rates looking for high efficiency. |
| Mining Farms | Scalable for bulk operations—low power costs mean better long-term margins. |
| Profit-Focused Investors | One of the best ROI miners in 2024 due to its 15J/TH efficiency. |
| Upgraders | Replaces older S19 series miners with +34TH/s and better efficiency. |
Crucial Details
-
Power Supply Needed: A 220–277V PSU (available separately) is needed.
-
Noise Alert: Only garages or other approved locations should use it due to its high decibel level (76 dB).
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Heat Management: Because it gets hot, make sure there is adequate cooling or ventilation.
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Profitability Vary: The price of Bitcoin and the difficulty of mining it have an effect on earnings. Always check calculators before buying.
Why Use the Antminer S21 Pro?
The S21 Pro is a clear choice for people who are serious about mining Bitcoin. It is 34% faster than the S19 XP and consumes less power per terahash. With 15 J/TH, it is one of the most efficient SHA-256 miners on the market, resulting in lower electricity costs and increased profits.
The S21 Pro provides reliable, high-yield mining with Bitmain’s tested hardware, whether you’re growing your farm or just want a high-performance home miner.
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