Bitmain Antminer S19j Pro (100Th) vs Bitmain Antminer S21 XP Hyd
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19j Pro (100Th) | Specification | Bitmain Antminer S21 XP Hyd |
|---|---|---|
| 100.0 TH/s | Hashrate | 473.0 TH/s |
| 3,050 W | Power Consumption | 5,676 W |
| 30.5 J/TH | Efficiency | 12.0 J/TH |
| — | Noise Level | 50 dB |
| 13,200.0 kg | Weight | 12.3 kg |
| 10,407 BTU/hr | BTU Output | 19,367 BTU/hr |
| 22/100 | Home Mining Score | 44/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S19j Pro (100Th)
Bitmain Antminer S21 XP Hyd
Based on BTC price of $79,230 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 XP Hyd wins on 4 of 6 factors (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 373% more hashrate (100 vs 473 TH/s). The Bitmain Antminer S19j Pro (100Th) holds the edge in power consumption and price-performance. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the Bitmain Antminer S19j Pro (100Th) and Bitmain Antminer S21 XP Hyd actually differ, with the gap quantified:
- Bitmain Antminer S21 XP Hyd 373% more hashrate (100 vs 473 TH/s)
- Bitmain Antminer S19j Pro (100Th) 46% better power draw (3,050 vs 5,676 W)
- Bitmain Antminer S21 XP Hyd 61% better efficiency (30.5 vs 12.0 J/TH)
- Bitmain Antminer S21 XP Hyd 100% better weight (13,200.0 vs 12.3 kg)
- Bitmain Antminer S21 XP Hyd 86% more heat output (10,407 vs 19,367 BTU/hr)
- Bitmain Antminer S21 XP Hyd 100% more home mining score (22.0 vs 44.0)
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.
| Bitmain Antminer S19j Pro (100Th) | Metric | Bitmain Antminer S21 XP Hyd |
|---|---|---|
| $600 | Upfront cost (MSRP) | $5,099 |
| -$3.56 | Daily net profit | $4.16 |
| -$1,899 | Net after 1 year | -$3,580 |
| -$3,199 | Net after 2 years | -$2,061 |
| -$4,498 | Net after 3 years | -$542 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~3.4 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 Hyd$7.72/day higher profit at current rates.
Best for Home Mining
Bitmain Antminer S21 XP HydScore: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 XP Hyd12.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Bitmain Antminer S19j Pro (100Th) or the Bitmain Antminer S21 XP Hyd?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP Hyd is more profitable at $4.16/day compared to $-3.56/day for the Bitmain Antminer S19j Pro (100Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S19j Pro (100Th) or the Bitmain Antminer S21 XP Hyd better for noise-sensitive spaces?
The Bitmain Antminer S21 XP Hyd is quieter at 50 dB compared to the Bitmain Antminer S19j Pro (100Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Bitmain Antminer S19j Pro (100Th) or the Bitmain Antminer S21 XP Hyd?
The Bitmain Antminer S21 XP Hyd scores 44/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer S19j Pro (100Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S19j Pro (100Th) vs Bitmain Antminer S21 XP Hyd: how much does the efficiency gap matter?
The Bitmain Antminer S19j Pro (100Th) runs at 30.5 J/TH while the Bitmain Antminer S21 XP Hyd runs at 12.0 J/TH — a difference of 18.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 61% better efficiency (30.5 vs 12.0 J/TH).