Bitmain's Antminer S21 Hydro sets a new benchmark in Bitcoin mining efficiency. Engineered for the SHA-256 algorithm, this cutting-edge miner delivers a staggering 335TH/s hashrate while maintaining optimized power consumption at 5445W.
Technical Specifications Breakdown
| Parameter | Details |
|---|---|
| Model | S21 Hyd |
| Algorithm | SHA-256 (BTC/BCH/BSV) |
| Hashrate | 335TH/s ±3% |
| Power Consumption | 5445W ±5% |
| Power Efficiency | 16J/TH ±5% |
| Dimensions | 570×316×430mm |
| Net Weight | 13.1kg |
| Operating Temp | 0–40°C |
| Warranty | 180 days |
👉 Explore mining profitability calculators to estimate your ROI with the S21 Hyd.
Performance Advantages
- Industry-Leading Efficiency: At 16J/TH, outperforms most liquid-cooled competitors
- Thermal Management: Stable operation in 0–40°C environments
- Compact Design: 13.1kg weight allows flexible deployment
- Warranty Coverage: 6-month protection against manufacturing defects
Purchasing & Logistics
Order Policies
- Maximum 500 units per customer
- Hashrate guarantee with refund provisions for underperformance
- Final product specifications may vary from promotional images
Global Shipping
- Manufactured in China, shipped from Hong Kong
- First-paid-first-ship priority system
- Buyers responsible for customs compliance (recommend researching local regulations)
Trusted By Miners Worldwide
"Received my Antminer S21 in perfect condition. The entire experience was smooth and professional."
— Nathan Masson, Verified Buyer"This is the most reliable supplier I've dealt with. They keep their promises on shipping times and quality."
— Noura Al Mohannadi, Mining Operator
👉 Discover more success stories from our global mining community.
FAQ: Antminer S21 Hyd
Q: What makes liquid cooling superior to air cooling?
A: Liquid cooling maintains lower operating temperatures, enabling higher sustained hashrates with reduced hardware stress.
Q: Can I use residential power for this miner?
A: The S21 Hyd requires 200–240V AC input. Consult an electrician to ensure your circuit can handle 5445W continuous load.
Q: How does the 180-day warranty work?
A: Coverage includes manufacturing defects. NiceAsicMiner handles return shipping for valid claims during the warranty period.
Q: What's the ROI timeframe?
A: Depending on electricity costs and BTC price, most users achieve ROI within 12–18 months.
Risk-Free Purchase Protection
- 7-Day No-Questions Refund: Return miner at your expense
- 30-Day Full Refund: NiceAsicMiner covers return shipping for defective units
- DOA Policy: Immediate refund for defective-on-arrival units (no return required)
Why Choose This Miner?
- Future-Proof Performance: Designed for upcoming Bitcoin difficulty adjustments
- Transparent Operations: Pre-shipment testing videos provided
- Simplified Setup: Plug-and-play configuration with Ethernet connectivity
- Scalable Solutions: Ideal for both hobbyist miners and large-scale operations
Note: All cryptocurrency mining hardware purchases should comply with local regulations regarding digital asset production and energy usage.