Bitmain Antminer K7 (63.5Th) vs Antminer KS3
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer K7 (63.5Th) | Specification | Antminer KS3 |
|---|---|---|
| 63.5 TH/s | Hashrate | 9.4 TH/s |
| 3,080 W | Power Consumption | 3,500 W |
| 48.5 J/TH | Efficiency | 372.3 J/TH |
| — | Noise Level | 75 dB |
| — | Weight | 16.1 kg |
| 10,509 BTU/hr | BTU Output | 11,942 BTU/hr |
| 22/100 | Home Mining Score | 36/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | KHeavyHash |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer K7 (63.5Th)
Antminer KS3
Based on BTC price of $78,179 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer K7 (63.5Th), which leads on 4 of 6 weighted factors (efficiency, hashrate, power consumption, price-performance). Its biggest concrete edge: 87% better efficiency (48.5 vs 372.3 J/TH). That said, the Antminer KS3 isn't beaten everywhere — it still wins 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 Bitmain Antminer K7 (63.5Th) and Antminer KS3 sit on each measurable spec:
- Bitmain Antminer K7 (63.5Th) 576% more hashrate (63.5 vs 9.4 TH/s)
- Bitmain Antminer K7 (63.5Th) 12% better power draw (3,080 vs 3,500 W)
- Bitmain Antminer K7 (63.5Th) 87% better efficiency (48.5 vs 372.3 J/TH)
- Antminer KS3 14% more heat output (10,509 vs 11,942 BTU/hr)
- Antminer KS3 64% more home mining score (22.0 vs 36.0)
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.
| Bitmain Antminer K7 (63.5Th) | Metric | Antminer KS3 |
|---|---|---|
| $1,860 | Upfront cost (MSRP) | $8,000 |
| -$5.11 | Daily net profit | -$8.06 |
| -$3,724 | Net after 1 year | -$10,943 |
| -$5,588 | Net after 2 years | -$13,885 |
| -$7,453 | Net after 3 years | -$16,828 |
| 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 KS3Score: 36/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer K7 (63.5Th)48.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer K7 (63.5Th) or the Antminer KS3?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer K7 (63.5Th) is more profitable at $-5.11/day compared to $-8.06/day for the Antminer KS3. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer K7 (63.5Th) or the Antminer KS3 better for noise-sensitive spaces?
The Antminer KS3 is quieter at 75 dB compared to the Bitmain Antminer K7 (63.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer K7 (63.5Th) vs Antminer KS3: which fits a residential setup better?
The Antminer KS3 scores 36/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer K7 (63.5Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
What is the efficiency difference between Bitmain Antminer K7 (63.5Th) and Antminer KS3?
The Bitmain Antminer K7 (63.5Th) runs at 48.5 J/TH while the Antminer KS3 runs at 372.3 J/TH — a difference of 323.8 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 87% better efficiency (48.5 vs 372.3 J/TH).