Bitmain Antminer Comparison

S21 Pro (234TH/s) vs S23 (318TH/s) - Expert Analysis

Antminer S21 Pro Available Now

✓ Immediate Deployment
Hashrate 234 TH/s
Power Consumption 3,510W
Energy Efficiency ~15 J/TH
Voltage Requirement 220-277V
Weight 15.4-20 kg
Noise Level 75-76 dB
$4,860 - $5,799

Current Market Price

Antminer S23 Pre-Order

⏳ January 2026 Delivery
Hashrate 318 TH/s
Power Consumption 3,498W
Energy Efficiency ~11 J/TH 27% Better
Voltage Requirement 380-415V
Weight 15.8 kg
Noise Level 75 dB
~$8,599

Pre-order Price

15
J/TH
S21 Pro
VS
11
J/TH
S23

Detailed Technical Comparison

Attribute S21 Pro (234TH/s) S23 (318TH) Advantage
Hashrate 234 TH/s 318 TH/s S23 (+36%)
Power Consumption 3,510W 3,498W S23 (Slightly lower)
Energy Efficiency ~15 J/TH ~11 J/TH S23 (27% better)
Release Date July 2024 Jan 2026 (Pre-order) S21 Pro (Available now)
Price Range $4,860 - $5,799 ~$8,599 S21 Pro (50-70% cheaper)
Voltage Requirement 220-277V 380-415V S21 Pro (More accessible)
Target Market Home/Small-scale Industrial/Data centers S21 Pro (Broader market)

💰 Profitability Analysis

S21 Pro Daily Profit:

  • At $0.05/kWh: $8.05/day
  • At $0.10/kWh: $3.84/day

S23 Daily Profit:

  • At $0.05/kWh: $12.44/day
  • At $0.10/kWh: $8.24/day

⏱️ Payback Period

S21 Pro Payback:

  • At $0.05/kWh: 1.81 years
  • At $0.10/kWh: 3.79 years

S23 Payback:

  • At $0.05/kWh: 1.90 years
  • At $0.10/kWh: 2.86 years

⚡ Energy Efficiency Impact

The S23's 27% efficiency improvement translates to:

  • Lower operational costs
  • Better resilience to Bitcoin price fluctuations
  • Competitive advantage in post-halving environment
  • Reduced carbon footprint

Strategic Recommendations

🏠 Individual/Small-Scale Miners

Recommended: S21 Pro

  • Immediate revenue generation
  • Accessible 220-277V power requirement
  • Lower initial investment
  • Proven technology and reliability
  • Suitable for residential/prosumer setups

🏭 Professional/Industrial Miners

Recommended: S23

  • Superior long-term profitability
  • 27% energy efficiency advantage
  • Future-proof investment
  • Designed for industrial infrastructure
  • Competitive edge in efficiency-driven market

Key Decision Factors

Choose S21 Pro if: You need immediate deployment, have standard electrical infrastructure, or operate at small-to-medium scale.


Choose S23 if: You have industrial power infrastructure, can wait until 2026, and prioritize long-term efficiency and competitive advantage.

Final Outlook

The Bitmain Antminer S21 Pro represents the culmination of current-generation air-cooled mining technology, offering immediate high-performance and proven reliability. It serves as an ideal solution for capitalizing on present market conditions.


The Bitmain Antminer S23, conversely, represents a glimpse into the future of Bitcoin mining. Its superior efficiency and industrial-scale design indicate that the next era will be defined not by raw computational power, but by unprecedented energy efficiency levels.


The fundamental choice: S21 Pro for immediate market participation versus S23 for long-term competitive dominance. Your decision should align with your operational scale, infrastructure capabilities, and strategic timeline.