Antminer D7 vs Antminer S21+
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer D7 | Specification | Antminer S21+ |
|---|---|---|
| 1,286.0 GH/s | Hashrate | 216.0 TH/s |
| 3,148 W | Power Consumption | 3,564 W |
| 2,447.9 J/TH | Efficiency | 16.5 J/TH |
| 70 dB | Noise Level | 75 dB |
| 14.4 kg | Weight | 15.0 kg |
| 10,741 BTU/hr | BTU Output | 12,160 BTU/hr |
| 36/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| X11 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer D7
Antminer S21+
Based on BTC price of $76,908 and current network difficulty as of May 18, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S21+, which leads on 3 of 6 weighted factors (efficiency, hashrate, price-performance). Its biggest concrete edge: 16696% more hashrate (1.3 vs 216.0 TH/s). The Antminer D7 holds the edge in power consumption and home mining score and noise level. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer D7 and Antminer S21+ actually differ, with the gap quantified:
- Antminer S21+ 16696% more hashrate (1.3 vs 216.0 TH/s)
- Antminer D7 12% better power draw (3,148 vs 3,564 W)
- Antminer S21+ 99% better efficiency (2,447.9 vs 16.5 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+ 13% more heat output (10,741 vs 12,160 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+ |
|---|---|---|
| $2,500 | Upfront cost (MSRP) | $6,500 |
| -$7.51 | Daily net profit | -$0.91 |
| -$5,241 | Net after 1 year | -$6,832 |
| -$7,982 | Net after 2 years | -$7,164 |
| -$10,723 | Net after 3 years | -$7,495 |
| 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+16.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer D7 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 $-0.91/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+: which runs at a lower noise level?
The Antminer D7 is quieter at 70 dB compared to the Antminer S21+ at 75 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer D7 or Antminer S21+?
The Antminer D7 scores 36/100 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.
How far apart are the Antminer D7 and Antminer S21+ on J/TH?
The Antminer D7 runs at 2,447.9 J/TH while the Antminer S21+ runs at 16.5 J/TH — a difference of 2,431.4 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 16.5 J/TH).