Antminer K7 vs Bitmain Antminer L11 Pro (21Gh)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer L11 Pro (21Gh) |
|---|---|---|
| 63.5 TH/s | Hashrate | 21.0 GH/s |
| 3,080 W | Power Consumption | 3,612 W |
| 48.5 J/TH | Efficiency | 172,000.0 J/TH |
| 75 dB | Noise Level | 75 dB |
| 14.0 kg | Weight | — |
| 10,509 BTU/hr | BTU Output | 12,324 BTU/hr |
| 36/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | Scrypt |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer L11 Pro (21Gh)
Based on BTC price of $78,158 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Antminer K7 edges it: 5 of 5 factors go its way (efficiency, hashrate, power consumption, home mining score, price-performance). The standout gap is 100% better efficiency (48.5 vs 172,000.0 J/TH) in the Antminer K7's favour. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Stripped to the numbers, this is how far apart the Antminer K7 and Bitmain Antminer L11 Pro (21Gh) sit on each measurable spec:
- Antminer K7 302281% more hashrate (63.5 vs 0.0 TH/s)
- Antminer K7 15% better power draw (3,080 vs 3,612 W)
- Antminer K7 100% better efficiency (48.5 vs 172,000.0 J/TH)
- Bitmain Antminer L11 Pro (21Gh) 17% more heat output (10,509 vs 12,324 BTU/hr)
- Antminer K7 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 K7 | Metric | Bitmain Antminer L11 Pro (21Gh) |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $7,999 |
| -$5.11 | Daily net profit | -$8.67 |
| -$5,364 | Net after 1 year | -$11,163 |
| -$7,229 | Net after 2 years | -$14,327 |
| -$9,093 | Net after 3 years | -$17,491 |
| 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 K7Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer K748.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer K7 or Bitmain Antminer L11 Pro (21Gh) more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer K7 is more profitable at $-5.11/day compared to $-8.67/day for the Bitmain Antminer L11 Pro (21Gh). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer K7 vs Bitmain Antminer L11 Pro (21Gh): which runs at a lower noise level?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
Which is better for home mining, the Antminer K7 or Bitmain Antminer L11 Pro (21Gh)?
The Antminer K7 scores 36/100 on our Home Mining Score (vs 30/100 for the Bitmain Antminer L11 Pro (21Gh)). 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 K7 and Bitmain Antminer L11 Pro (21Gh) on J/TH?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer L11 Pro (21Gh) runs at 172,000.0 J/TH — a difference of 171,951.5 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 172,000.0 J/TH).