Antminer K7 vs Antminer S19j
Side-by-side specs, profitability, and home mining comparison.
Quick verdict
For most buyers the Antminer S19j is the stronger pick — it leads on 3 of 4 head-to-head factors. The Antminer K7 runs 63.5 TH/s; the Antminer S19j runs 90.0 TH/s.
Specs verified against the D-Central Mining Bible \xc2\xb7 June 2026
Specifications Comparison
| Antminer K7 | Specification | Antminer S19j |
|---|---|---|
| 63.5 TH/s | Taux de hachage | 90.0 TH/s |
| 3,080 W | Consommation électrique | 3,100 W |
| 48.5 J/TH | Efficiency | 34.4 J/TH |
| 75 dB | Niveau de bruit | 75 dB |
| 14.0 kg | Weight | 13.0 kg |
| 10,509 BTU/hr | BTU Output | 10,577 BTU/hr |
| 8/100 | Home Mining Score | 8/100 |
| — | Release Year | — |
| Eaglesong | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Antminer S19j
Based on BTC price of $60,166 and current network difficulty as of Jun 27, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Antminer S19j l'emporte sur 3 des 4 facteurs (efficacité, hashrate, rapport qualité-prix). Its biggest concrete edge: 42% more hashrate (63.5 vs 90.0 TH/s). The Antminer K7 holds the edge in consommation électrique. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Antminer K7 and Antminer S19j actually differ, with the gap quantified:
- Antminer S19j 42% more hashrate (63.5 vs 90.0 TH/s)
- Antminer K7 1% better power draw (3,080 vs 3,100 W)
- Antminer S19j 29% better efficacité (48.5 vs 34.4 J/TH)
- Antminer S19j 7% better weight (14.0 vs 13.0 kg)
- Antminer S19j 1% more heat output (10,509 vs 10,577 BTU/hr)
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 | Antminer S19j |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $2,000 |
| -$5.60 | Daily net profit | -$4.90 |
| -$5,543 | Net after 1 year | -$3,787 |
| -$7,586 | Net after 2 years | -$5,575 |
| -$9,630 | Net after 3 years | -$7,362 |
| 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
TieBoth miners are equally suitable for home use.
Best for Efficiency
Antminer S19j34.4 J/TH — lower electricity cost per terahash.
Foire aux questions
Which makes more money, the Antminer K7 or the Antminer S19j?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S19j is more profitable at $-4.90/day compared to $-5.60/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer K7 or the Antminer S19j better for noise-sensitive spaces?
Both miners have similar noise levels. Check the specs table above for exact decibel readings.
For mining at home, should I pick the Antminer K7 or the Antminer S19j?
Both miners score similarly on our Home Mining Score. Consider your specific constraints (noise tolerance, available power, heat needs) to decide.
How far apart are the Antminer K7 and Antminer S19j on J/TH?
The Antminer K7 runs at 48.5 J/TH while the Antminer S19j runs at 34.4 J/TH — a difference of 14.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 29% better efficacité (48.5 vs 34.4 J/TH).