Antminer S19j vs Bitmain Antminer S21 XP Immersion
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S19j | Specification | Bitmain Antminer S21 XP Immersion |
|---|---|---|
| 90.0 TH/s | Hashrate | 300.0 TH/s |
| 3,100 W | Power Consumption | 4,050 W |
| 34.4 J/TH | Efficiency | 13.5 J/TH |
| 75 dB | Noise Level | 50 dB |
| 13.0 kg | Weight | 14.4 kg |
| 10,577 BTU/hr | BTU Output | 13,819 BTU/hr |
| 84/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Antminer S19j
Bitmain Antminer S21 XP Immersion
Based on BTC price of $76,967 and current network difficulty as of May 18, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer S21 XP Immersion, which leads on 4 of 6 weighted factors (efficiency, hashrate, noise level, price-performance). Its biggest concrete edge: 233% more hashrate (90.0 vs 300.0 TH/s). That said, the Antminer S19j isn't beaten everywhere — it still wins power consumption and home mining score. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Antminer S19j and Bitmain Antminer S21 XP Immersion diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S21 XP Immersion 233% more hashrate (90.0 vs 300.0 TH/s)
- Antminer S19j 23% better power draw (3,100 vs 4,050 W)
- Bitmain Antminer S21 XP Immersion 61% better efficiency (34.4 vs 13.5 J/TH)
- Bitmain Antminer S21 XP Immersion 33% better noise (75.0 vs 50.0 dB)
- Antminer S19j 10% better weight (13.0 vs 14.4 kg)
- Bitmain Antminer S21 XP Immersion 31% more heat output (10,577 vs 13,819 BTU/hr)
- Antminer S19j 91% more home mining score (84.0 vs 44.0)
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.
| Antminer S19j | Metric | Bitmain Antminer S21 XP Immersion |
|---|---|---|
| $2,000 | Upfront cost (MSRP) | $1,593 |
| -$4.25 | Daily net profit | $0.91 |
| -$3,552 | Net after 1 year | -$1,262 |
| -$5,104 | Net after 2 years | -$932 |
| -$6,656 | Net after 3 years | -$601 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~4.8 years to pay back at current rates |
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
Bitmain Antminer S21 XP Immersion$5.16/day higher profit at current rates.
Best for Home Mining
Antminer S19jScore: 84/100. 75 dB noise level.
Best for Efficiency
Bitmain Antminer S21 XP Immersion13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S19j or the Bitmain Antminer S21 XP Immersion?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP Immersion is more profitable at $0.91/day compared to $-4.25/day for the Antminer S19j. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Antminer S19j vs Bitmain Antminer S21 XP Immersion: which runs at a lower noise level?
The Bitmain Antminer S21 XP Immersion is quieter at 50 dB compared to the Antminer S19j at 75 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer S19j or the Bitmain Antminer S21 XP Immersion?
The Antminer S19j scores 84/100 on our Home Mining Score (vs 44/100 for the Bitmain Antminer S21 XP Immersion). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer S19j vs Bitmain Antminer S21 XP Immersion: how much does the efficiency gap matter?
The Antminer S19j runs at 34.4 J/TH while the Bitmain Antminer S21 XP Immersion runs at 13.5 J/TH — a difference of 20.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 61% better efficiency (34.4 vs 13.5 J/TH).