Bitmain Antminer S7 vs Bitmain Antminer S9k (13.5Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S7 | Specification | Bitmain Antminer S9k (13.5Th) |
|---|---|---|
| 4.7 TH/s | Hashrate | 13.5 TH/s |
| 1,293 W | Power Consumption | 1,310 W |
| 273.4 J/TH | Efficiency | 97.0 J/TH |
| — | Noise Level | — |
| 3,900.0 kg | Weight | 4,200.0 kg |
| 4,412 BTU/hr | BTU Output | 4,470 BTU/hr |
| 31/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S7
Bitmain Antminer S9k (13.5Th)
Based on BTC price of $79,115 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer S9k (13.5Th), which leads on 2 of 3 weighted factors (efficiency, hashrate). Where it pulls away hardest is 185% more hashrate (4.7 vs 13.5 TH/s). The Bitmain Antminer S7 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
Here is every spec where the Bitmain Antminer S7 and Bitmain Antminer S9k (13.5Th) actually differ, with the gap quantified:
- Bitmain Antminer S9k (13.5Th) 185% more hashrate (4.7 vs 13.5 TH/s)
- Bitmain Antminer S7 1% better power draw (1,293 vs 1,310 W)
- Bitmain Antminer S9k (13.5Th) 65% better efficiency (273.4 vs 97.0 J/TH)
- Bitmain Antminer S7 7% better weight (3,900 vs 4,200 kg)
- Bitmain Antminer S9k (13.5Th) 1% more heat output (4,412 vs 4,470 BTU/hr)
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.
| Bitmain Antminer S7 | Metric | Bitmain Antminer S9k (13.5Th) |
|---|---|---|
| — | Upfront cost (MSRP) | $600 |
| -$2.93 | Daily net profit | -$2.65 |
| -$1,070 | Net after 1 year | -$1,568 |
| -$2,140 | Net after 2 years | -$2,536 |
| -$3,209 | Net after 3 years | -$3,504 |
| — | 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
TieBoth miners are equally suitable for home use.
Best for Efficiency
Bitmain Antminer S9k (13.5Th)97.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S7 vs Bitmain Antminer S9k (13.5Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S9k (13.5Th) is more profitable at $-2.65/day compared to $-2.93/day for the Bitmain Antminer S7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S7 or the Bitmain Antminer S9k (13.5Th) better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Bitmain Antminer S7 or Bitmain Antminer S9k (13.5Th)?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
What is the efficiency difference between Bitmain Antminer S7 and Bitmain Antminer S9k (13.5Th)?
The Bitmain Antminer S7 runs at 273.4 J/TH while the Bitmain Antminer S9k (13.5Th) runs at 97.0 J/TH — a difference of 176.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 65% better efficiency (273.4 vs 97.0 J/TH).