Antminer K7 vs Bitmain Antminer S19e XP Hydro 251T
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer K7 | Specification | Bitmain Antminer S19e XP Hydro 251T |
|---|---|---|
| 63.5 TH/s | Hashrate | 251.0 TH/s |
| 3,080 W | Power Consumption | 5,522 W |
| 48.5 J/TH | Efficiency | 22.0 J/TH |
| 75 dB | Noise Level | 50 dB |
| 14.0 kg | Weight | 12.8 kg |
| 10,509 BTU/hr | BTU Output | 18,841 BTU/hr |
| 36/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| Eaglesong | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer K7
Bitmain Antminer S19e XP Hydro 251T
Based on BTC price of $79,034 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Antminer S19e XP Hydro 251T edges it: 5 of 6 factors go its way (efficiency, hashrate, home mining score, noise level, price-performance). Where it pulls away hardest is 295% more hashrate (63.5 vs 251.0 TH/s). The Antminer K7 claws back ground on power consumption. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
The Antminer K7 and Bitmain Antminer S19e XP Hydro 251T diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S19e XP Hydro 251T 295% more hashrate (63.5 vs 251.0 TH/s)
- Antminer K7 44% better power draw (3,080 vs 5,522 W)
- Bitmain Antminer S19e XP Hydro 251T 55% better efficiency (48.5 vs 22.0 J/TH)
- Bitmain Antminer S19e XP Hydro 251T 33% better noise (75.0 vs 50.0 dB)
- Bitmain Antminer S19e XP Hydro 251T 9% better weight (14.0 vs 12.8 kg)
- Bitmain Antminer S19e XP Hydro 251T 79% more heat output (10,509 vs 18,841 BTU/hr)
- Bitmain Antminer S19e XP Hydro 251T 22% more home mining score (36.0 vs 44.0)
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 S19e XP Hydro 251T |
|---|---|---|
| $3,500 | Upfront cost (MSRP) | $816 |
| -$5.08 | Daily net profit | -$4.12 |
| -$5,355 | Net after 1 year | -$2,321 |
| -$7,210 | Net after 2 years | -$3,826 |
| -$9,065 | Net after 3 years | -$5,332 |
| 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
Bitmain Antminer S19e XP Hydro 251TScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S19e XP Hydro 251T22.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Antminer K7 vs Bitmain Antminer S19e XP Hydro 251T: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S19e XP Hydro 251T is more profitable at $-4.12/day compared to $-5.08/day for the Antminer K7. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer K7 or Bitmain Antminer S19e XP Hydro 251T?
The Bitmain Antminer S19e XP Hydro 251T is quieter at 50 dB compared to the Antminer K7 at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer K7 or the Bitmain Antminer S19e XP Hydro 251T?
The Bitmain Antminer S19e XP Hydro 251T scores 44/100 on our Home Mining Score (vs 36/100 for the Antminer K7). 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 Antminer K7 and Bitmain Antminer S19e XP Hydro 251T?
The Antminer K7 runs at 48.5 J/TH while the Bitmain Antminer S19e XP Hydro 251T runs at 22.0 J/TH — a difference of 26.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 55% better efficiency (48.5 vs 22.0 J/TH).