Antminer D7 vs Antminer S21 Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer D7 | Specification | Antminer S21 Pro |
|---|---|---|
| 1,286.0 GH/s | Hashrate | 234.0 TH/s |
| 3,148 W | Power Consumption | 3,510 W |
| 2,447.9 J/TH | Efficiency | 15.0 J/TH |
| 70 dB | Noise Level | 75 dB |
| 14.4 kg | Weight | 15.0 kg |
| 10,741 BTU/hr | BTU Output | 11,976 BTU/hr |
| 36/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| X11 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D7
Antminer S21 Pro
Based on BTC price of $78,208 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Antminer S21 Pro wins on 3 of 6 factors (efficiency, hashrate, price-performance). Where it pulls away hardest is 18096% more hashrate (1.3 vs 234.0 TH/s). That said, the Antminer D7 isn't beaten everywhere — it still wins power consumption and home mining score and noise level. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Antminer D7 and Antminer S21 Pro diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer S21 Pro 18096% more hashrate (1.3 vs 234.0 TH/s)
- Antminer D7 10% better power draw (3,148 vs 3,510 W)
- Antminer S21 Pro 99% better efficiency (2,447.9 vs 15.0 J/TH)
- Antminer D7 7% better noise (70.0 vs 75.0 dB)
- Antminer D7 4% better weight (14.4 vs 15.0 kg)
- Antminer S21 Pro 11% more heat output (10,741 vs 11,976 BTU/hr)
- Antminer D7 20% more home mining score (36.0 vs 30.0)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Antminer D7 | Metric | Antminer S21 Pro |
|---|---|---|
| $2,500 | Upfront cost (MSRP) | $6,800 |
| -$7.51 | Daily net profit | -$0.00 |
| -$5,241 | Net after 1 year | -$6,801 |
| -$7,982 | Net after 2 years | -$6,802 |
| -$10,722 | Net after 3 years | -$6,803 |
| 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 D7Score: 36/100. 70 dB noise level.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer D7 or the Antminer S21 Pro?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $0.00/day compared to $-7.51/day for the Antminer D7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer D7 vs Antminer S21 Pro: which runs at a lower noise level?
The Antminer D7 is quieter at 70 dB compared to the Antminer S21 Pro at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer D7 or the Antminer S21 Pro?
The Antminer D7 scores 36/100 on our Home Mining Score (vs 30/100 for the Antminer S21 Pro). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer D7 vs Antminer S21 Pro: how much does the efficiency gap matter?
The Antminer D7 runs at 2,447.9 J/TH while the Antminer S21 Pro runs at 15.0 J/TH — a difference of 2,432.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 99% better efficiency (2,447.9 vs 15.0 J/TH).