Antminer K7 vs Bitmain Antminer X3 (220Kh)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer X3 (220Kh) |
|---|---|---|
| 63.5 TH/s | Hashrate | 220.0 KH/s |
| 3,080 W | Power Consumption | 465 W |
| 48.5 J/TH | Efficiency | 2,113,636,363.6 J/TH |
| 75 dB | Noise Level | — |
| 14.0 kg | Weight | 5,500.0 kg |
| 10,509 BTU/hr | BTU Output | 1,587 BTU/hr |
| 36/100 | Home Mining Score | 34/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | Cryptonight |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer X3 (220Kh)
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 K7, which leads on 4 of 5 weighted factors (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 28863636264% more hashrate (63.5 vs 0.0 TH/s). The Bitmain Antminer X3 (220Kh) holds the edge in power consumption. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer K7 and Bitmain Antminer X3 (220Kh) sit on each measurable spec:
- Antminer K7 28863636264% more hashrate (63.5 vs 0.0 TH/s)
- Bitmain Antminer X3 (220Kh) 85% better power draw (3,080 vs 465 W)
- Antminer K7 100% better efficiency (48.5 vs 2,113,636,363.6 J/TH)
- Antminer K7 100% better weight (14.0 vs 5,500.0 kg)
- Antminer K7 562% more heat output (10,509 vs 1,587 BTU/hr)
- Antminer K7 6% more home mining score (36.0 vs 34.0)
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 K7 | Metric | Bitmain Antminer X3 (220Kh) |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | — |
| -$5.14 | Daily net profit | -$1.12 |
| -$5,378 | Net after 1 year | -$407 |
| -$7,256 | Net after 2 years | -$815 |
| -$9,133 | Net after 3 years | -$1,222 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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 K7Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer K748.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer K7 vs Bitmain Antminer X3 (220Kh): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer X3 (220Kh) is more profitable at $-1.12/day compared to $-5.14/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer K7 vs Bitmain Antminer X3 (220Kh): which runs at a lower noise level?
The Antminer K7 is quieter at 75 dB compared to the Bitmain Antminer X3 (220Kh) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Antminer K7 or Bitmain Antminer X3 (220Kh)?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 34/100 for the Bitmain Antminer X3 (220Kh)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer K7 vs Bitmain Antminer X3 (220Kh): how much does the efficiency gap matter?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer X3 (220Kh) runs at 2,113,636,363.6 J/TH — a difference of 2,113,636,315.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 100% better efficiency (48.5 vs 2,113,636,363.6 J/TH).