Bitmain Antminer S21 188 TH/s Bitcoin Miner
The Bitmain Antminer S21 188T is a high-efficiency SHA-256 ASIC miner designed for mining Bitcoin and other compatible SHA-256 cryptocurrencies. It delivers approximately 188 TH/s while consuming about 3290W.
With an energy efficiency of approximately 17.5 J/TH, the S21 represents a major improvement over many previous-generation Bitcoin miners. Browse our complete range of Bitcoin ASIC miners to compare other available models.
Efficient SHA-256 Mining
The Antminer S21 supports Bitcoin (BTC), Bitcoin Cash (BCH), Bitcoin SV (BSV) and other compatible SHA-256 cryptocurrencies.
Actual hashrate and power consumption may vary according to firmware, operating temperature, input voltage and machine condition. Mining income and profitability are not guaranteed and depend on electricity costs, pool fees, network difficulty and cryptocurrency prices.
Power and Installation Requirements
The S21 consumes approximately 3290W during normal operation and requires a dedicated high-voltage electrical circuit. Before installation, confirm the required voltage, cable type, circuit capacity and connector configuration for the supplied PSU and power cord.
This miner produces substantial heat and noise during continuous operation. It requires strong airflow and is best suited to professional facilities. You can compare more equipment intended for demanding operations in our industrial Bitcoin miners category.
Technical Specifications
| Manufacturer | Bitmain |
|---|---|
| Model | Antminer S21 188T |
| Algorithm | SHA-256 |
| Mineable coins | Bitcoin, Bitcoin Cash and other compatible SHA-256 coins |
| Hashrate | 188 TH/s |
| Power consumption | Approximately 3290W |
| Energy efficiency | Approximately 17.5 J/TH |
| Input voltage | 220–277V AC |
| Cooling | Industrial air cooling |
| Noise level | Approximately 75 dBA |
| Network connection | RJ45 Ethernet |
| Operating temperature | Approximately 5–45°C |
| Operating humidity | 5–95%, non-condensing |
| Dimensions | Approximately 400 × 195 × 290 mm |
| Net weight | Approximately 14.2–15 kg |
Before Ordering
Please contact Mining-Now to confirm current availability, exact batch specifications, condition, included power cable, warranty coverage, final price and shipping costs.
Have a qualified electrician confirm that your location can safely support the miner’s voltage, continuous power demand and connector requirements before installation. You can also browse all mining equipment currently listed by Mining-Now.




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