Bitaxe Ultra vs Bitmain Bitcoin Miner S19j XP
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitaxe Ultra | Specification | Bitmain Bitcoin Miner S19j XP |
|---|---|---|
| 500.0 GH/s | Hashrate | 151.0 TH/s |
| 15 W | Power Consumption | 3,247 W |
| 30.0 J/TH | Efficiency | 21.5 J/TH |
| 35 dB | Noise Level | — |
| 0.3 kg | Weight | — |
| 51 BTU/hr | BTU Output | 11,079 BTU/hr |
| 70/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| D-Central | Manufacturer | Bitmain |
Profitability Comparison
Bitaxe Ultra
Bitmain Bitcoin Miner S19j XP
Based on BTC price of $77,866 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitmain Bitcoin Miner S19j XP edges it: 3 of 6 factors go its way (efficiency, hashrate, price-performance). Where it pulls away hardest is 30100% more hashrate (0.5 vs 151.0 TH/s). The Bitaxe Ultra holds the edge in power consumption and 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 Bitaxe Ultra and Bitmain Bitcoin Miner S19j XP sit on each measurable spec:
- Bitmain Bitcoin Miner S19j XP 30100% more hashrate (0.5 vs 151.0 TH/s)
- Bitaxe Ultra 100% better power draw (15.0 vs 3,247.0 W)
- Bitmain Bitcoin Miner S19j XP 28% better efficiency (30.0 vs 21.5 J/TH)
- Bitmain Bitcoin Miner S19j XP 21538% more heat output (51.2 vs 11,078.8 BTU/hr)
- Bitaxe Ultra 218% more home mining score (70.0 vs 22.0)
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.
| Bitaxe Ultra | Metric | Bitmain Bitcoin Miner S19j XP |
|---|---|---|
| $79 | Upfront cost (MSRP) | $999 |
| -$0.02 | Daily net profit | -$2.38 |
| -$86 | Net after 1 year | -$1,868 |
| -$92 | Net after 2 years | -$2,738 |
| -$99 | Net after 3 years | -$3,607 |
| 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
Bitaxe UltraScore: 70/100. 35 dB noise level.
Best for Efficiency
Bitmain Bitcoin Miner S19j XP21.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitaxe Ultra or Bitmain Bitcoin Miner S19j XP more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitaxe Ultra is more profitable at $-0.02/day compared to $-2.38/day for the Bitmain Bitcoin Miner S19j XP. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitaxe Ultra or the Bitmain Bitcoin Miner S19j XP better for noise-sensitive spaces?
The Bitaxe Ultra is quieter at 35 dB compared to the Bitmain Bitcoin Miner S19j XP at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Bitaxe Ultra or the Bitmain Bitcoin Miner S19j XP?
The Bitaxe Ultra scores 70/100 on our Home Mining Score (vs 22/100 for the Bitmain Bitcoin Miner S19j XP). 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 Bitaxe Ultra and Bitmain Bitcoin Miner S19j XP?
The Bitaxe Ultra runs at 30.0 J/TH while the Bitmain Bitcoin Miner S19j XP runs at 21.5 J/TH — a difference of 8.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 28% better efficiency (30.0 vs 21.5 J/TH).