Antminer K7 vs Bitmain Antminer S21e Hyd (332Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer S21e Hyd (332Th) |
|---|---|---|
| 63.5 TH/s | Hashrate | 332.0 TH/s |
| 3,080 W | Power Consumption | 5,644 W |
| 48.5 J/TH | Efficiency | 17.0 J/TH |
| 75 dB | Noise Level | 55 dB |
| 14.0 kg | Weight | 12.8 kg |
| 10,509 BTU/hr | BTU Output | 19,257 BTU/hr |
| 36/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer S21e Hyd (332Th)
Based on BTC price of $79,090 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21e Hyd (332Th) wins on 5 of 6 factors (efficiency, hashrate, home mining score, noise level, price-performance). Where it pulls away hardest is 423% more hashrate (63.5 vs 332.0 TH/s). The Antminer K7 claws back ground on power consumption. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Antminer K7 and Bitmain Antminer S21e Hyd (332Th) diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S21e Hyd (332Th) 423% more hashrate (63.5 vs 332.0 TH/s)
- Antminer K7 45% better power draw (3,080 vs 5,644 W)
- Bitmain Antminer S21e Hyd (332Th) 65% better efficiency (48.5 vs 17.0 J/TH)
- Bitmain Antminer S21e Hyd (332Th) 27% better noise (75.0 vs 55.0 dB)
- Bitmain Antminer S21e Hyd (332Th) 9% better weight (14.0 vs 12.8 kg)
- Bitmain Antminer S21e Hyd (332Th) 83% more heat output (10,509 vs 19,257 BTU/hr)
- Bitmain Antminer S21e Hyd (332Th) 22% more home mining score (36.0 vs 44.0)
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 K7 | Metric | Bitmain Antminer S21e Hyd (332Th) |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $1,799 |
| -$5.08 | Daily net profit | -$1.46 |
| -$5,355 | Net after 1 year | -$2,333 |
| -$7,209 | Net after 2 years | -$2,866 |
| -$9,064 | Net after 3 years | -$3,400 |
| 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
Bitmain Antminer S21e Hyd (332Th)Score: 44/100. 55 dB noise level.
Best for Efficiency
Bitmain Antminer S21e Hyd (332Th)17.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer K7 vs Bitmain Antminer S21e Hyd (332Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21e Hyd (332Th) is more profitable at $-1.46/day compared to $-5.08/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer K7 or Bitmain Antminer S21e Hyd (332Th)?
The Bitmain Antminer S21e Hyd (332Th) is quieter at 55 dB compared to the Antminer K7 at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer K7 or the Bitmain Antminer S21e Hyd (332Th)?
The Bitmain Antminer S21e Hyd (332Th) scores 44/100 on our Home Mining Score (vs 36/100 for the Antminer K7). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer K7 vs Bitmain Antminer S21e Hyd (332Th): how much does the efficiency gap matter?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer S21e Hyd (332Th) runs at 17.0 J/TH — a difference of 31.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 65% better efficiency (48.5 vs 17.0 J/TH).