Every year on May 22nd, the Bitcoin community celebrates Bitcoin Pizza Day — the historic moment when 10,000 BTC were used to buy two pizzas, marking Bitcoin’s first real-world transaction.
Today, instead of buying pizza with Bitcoin, more miners are focused on accumulating BTC efficiently through high-performance ASIC miners. If you're planning to enter or expand your mining operation, Bitmain’s Antminer S21 series remains one of the strongest choices on the market.
In this guide, we compare three popular models currently available at NHASH: Antminer S21++, Antminer S21 Pro+, and Antminer S21 XP 270Th.
Antminer S21++ Series — Best Value for ROI
The Antminer S21++ series offers a balanced combination of hashrate, efficiency, and upfront cost. It is ideal for miners seeking faster ROI and scalable deployment.
- 216Th — $1699
- 225Th — $1779
- 235Th — $1899
- Power Ratio: 16.5J/Th
Why choose S21++?
- Competitive entry price
- Strong efficiency for long-term mining
- Excellent choice for medium-scale farms
- Balanced ROI and operating cost
- Suitable for both self-hosting and professional hosting
Antminer S21 Pro+ Series — Higher Efficiency for Serious Miners
If you are looking for higher hashrate output while maintaining excellent energy efficiency, the Antminer S21 Pro+ series is designed for more aggressive BTC accumulation strategies.
- 220Th — $2199
- 234Th — $2329
- 245Th — $2449
- Power Ratio: 15J/Th
Why choose S21 Pro+?
- Higher hashrate density
- Improved power efficiency compared to S21++
- Better suited for industrial-scale operations
- Lower long-term electricity cost per TH
- Great balance between performance and operating cost
Antminer S21 XP 270Th — Maximum Hashrate & Best Efficiency
For miners seeking top-tier performance, the Antminer S21 XP 270Th delivers one of the highest hashrates and strongest efficiencies in the S21 lineup.
- 270Th — $3599
- Power Ratio: 13.5J/Th
Why choose S21 XP?
- Ultra-high hashrate
- Industry-leading power efficiency
- Optimized for large-scale professional mining
- Stronger competitiveness against future difficulty increases
- Premium option for long-term BTC production
Power Efficiency Comparison
| Model | Hashrate Range | Power Ratio | Best For |
|---|---|---|---|
| Antminer S21++ | 216Th – 235Th | 16.5J/Th | Best value ROI |
| Antminer S21 Pro+ | 220Th – 245Th | 15J/Th | Balanced performance & efficiency |
| Antminer S21 XP | 270Th | 13.5J/Th | Maximum efficiency & hashrate |
Lower J/Th means better energy efficiency. For miners operating at scale, power ratio plays a major role in long-term profitability and hosting cost optimization.
Why Buy from NHASH?
At NHASH, we help miners worldwide source reliable ASIC miners with competitive pricing and professional hosting support.
- Free shipping on selected miners
- Mining hosting solutions
- Fast customer support
- Bulk order assistance
- Trusted global mining network
Final Thoughts
Bitcoin Pizza Day reminds us how far Bitcoin has come — from two pizzas to a global mining industry worth billions.
As mining competition continues to grow, choosing efficient hardware becomes more important than ever. Whether you prioritize affordability, balanced efficiency, or maximum performance, the Antminer S21 lineup offers a strong option for every type of BTC miner.
If you're ready to grow your mining operation, explore the latest Antminer models today with NHASH.
Happy Bitcoin Pizza Day & Happy Mining!
