Antminer E9 Pro vs Antminer S21+
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer E9 Pro | Specification | Antminer S21+ |
|---|---|---|
| 3,680.0 MH/s | Hashrate | 216.0 TH/s |
| 2,200 W | Power Consumption | 3,564 W |
| 597,826.1 J/TH | Efficiency | 16.5 J/TH |
| 75 dB | Noise Level | 75 dB |
| 14.2 kg | Weight | 15.0 kg |
| 7,506 BTU/hr | BTU Output | 12,160 BTU/hr |
| 40/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| EtHash | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer E9 Pro
Antminer S21+
Based on BTC price of $78,179 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Antminer S21+ edges it: 3 of 5 factors go its way (efficiency, hashrate, price-performance). Where it pulls away hardest is 5869465% more hashrate (0.0 vs 216.0 TH/s). The Antminer E9 Pro holds the edge in power consumption and home mining score. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer E9 Pro and Antminer S21+ diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer S21+ 5869465% more hashrate (0.0 vs 216.0 TH/s)
- Antminer E9 Pro 38% better power draw (2,200 vs 3,564 W)
- Antminer S21+ 100% better efficiency (597,826.1 vs 16.5 J/TH)
- Antminer E9 Pro 5% better weight (14.2 vs 15.0 kg)
- Antminer S21+ 62% more heat output (7,506 vs 12,160 BTU/hr)
- Antminer E9 Pro 33% more home mining score (40.0 vs 30.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| Antminer E9 Pro | Metric | Antminer S21+ |
|---|---|---|
| $3,000 | Upfront cost (MSRP) | $6,500 |
| -$5.28 | Daily net profit | -$0.78 |
| -$4,927 | Net after 1 year | -$6,786 |
| -$6,854 | Net after 2 years | -$7,071 |
| -$8,781 | Net after 3 years | -$7,357 |
| Does not pay back at current rates (negative daily profit) | Payback period | Does not pay back at current rates (negative daily profit) |
Projections assume continuous operation, a flat $0.10/kWh rate, and no hardware degradation, pool fees, or BTC price change. Real-world ROI varies.
Best For...
Best for Profitability
TieBoth miners produce similar daily profit.
Best for Home Mining
Antminer E9 ProScore: 40/100. 75 dB noise level.
Best for Efficiency
Antminer S21+16.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer E9 Pro vs Antminer S21+: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21+ is more profitable at $-0.78/day compared to $-5.28/day for the Antminer E9 Pro. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer E9 Pro or Antminer S21+?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Antminer E9 Pro or the Antminer S21+?
The Antminer E9 Pro scores 40/100 on our Home Mining Score (vs 30/100 for the Antminer S21+). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Antminer E9 Pro and Antminer S21+?
The Antminer E9 Pro runs at 597,826.1 J/TH while the Antminer S21+ runs at 16.5 J/TH — a difference of 597,809.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 100% better efficiency (597,826.1 vs 16.5 J/TH).