Antminer E9 Pro vs Bitmain Antminer S21 Hyd (335Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer E9 Pro | Specification | Bitmain Antminer S21 Hyd (335Th) |
|---|---|---|
| 3,680.0 MH/s | Hashrate | 335.0 TH/s |
| 2,200 W | Power Consumption | 5,360 W |
| 597,826.1 J/TH | Efficiency | 16.0 J/TH |
| 75 dB | Noise Level | — |
| 14.2 kg | Weight | 14.2 kg |
| 7,506 BTU/hr | BTU Output | 18,288 BTU/hr |
| 40/100 | Home Mining Score | 16/100 |
| — | Release Year | — |
| EtHash | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer E9 Pro
Bitmain Antminer S21 Hyd (335Th)
Based on BTC price of $79,027 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 Hyd (335Th) wins on 3 of 6 factors (efficiency, hashrate, price-performance). Its biggest concrete edge: 9103161% more hashrate (0.0 vs 335.0 TH/s). That said, the Antminer E9 Pro isn't beaten everywhere — it still wins power consumption and home mining score and noise level. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer E9 Pro and Bitmain Antminer S21 Hyd (335Th) sit on each measurable spec:
- Bitmain Antminer S21 Hyd (335Th) 9103161% more hashrate (0.0 vs 335.0 TH/s)
- Antminer E9 Pro 59% better power draw (2,200 vs 5,360 W)
- Bitmain Antminer S21 Hyd (335Th) 100% better efficiency (597,826.1 vs 16.0 J/TH)
- Bitmain Antminer S21 Hyd (335Th) 144% more heat output (7,506 vs 18,288 BTU/hr)
- Antminer E9 Pro 150% more home mining score (40.0 vs 16.0)
Cost & ROI Over Time
Hardware cost is only half the story — here is how each miner's upfront price plays out against cumulative profit at a $0.10/kWh rate.
| Antminer E9 Pro | Metric | Bitmain Antminer S21 Hyd (335Th) |
|---|---|---|
| $3,000 | Upfront cost (MSRP) | $3,999 |
| -$5.28 | Daily net profit | -$0.68 |
| -$4,927 | Net after 1 year | -$4,248 |
| -$6,854 | Net after 2 years | -$4,496 |
| -$8,781 | Net after 3 years | -$4,745 |
| 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
Bitmain Antminer S21 Hyd (335Th)16.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer E9 Pro or Bitmain Antminer S21 Hyd (335Th) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Hyd (335Th) is more profitable at $-0.68/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 Bitmain Antminer S21 Hyd (335Th)?
The Antminer E9 Pro is quieter at 75 dB compared to the Bitmain Antminer S21 Hyd (335Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer E9 Pro or the Bitmain Antminer S21 Hyd (335Th)?
The Antminer E9 Pro scores 40/100 on our Home Mining Score (vs 16/100 for the Bitmain Antminer S21 Hyd (335Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer E9 Pro and Bitmain Antminer S21 Hyd (335Th) on J/TH?
The Antminer E9 Pro runs at 597,826.1 J/TH while the Bitmain Antminer S21 Hyd (335Th) runs at 16.0 J/TH — a difference of 597,810.1 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 16.0 J/TH).