Bitmain Antminer S21 XP Hyd vs Bitmain Bitcoin Miner S19j XP
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 XP Hyd | Specification | Bitmain Bitcoin Miner S19j XP |
|---|---|---|
| 473.0 TH/s | Hashrate | 151.0 TH/s |
| 5,676 W | Power Consumption | 3,247 W |
| 12.0 J/TH | Efficiency | 21.5 J/TH |
| 50 dB | Noise Level | — |
| 12.3 kg | Weight | — |
| 19,367 BTU/hr | BTU Output | 11,079 BTU/hr |
| 44/100 | Home Mining Score | 22/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21 XP Hyd
Bitmain Bitcoin Miner S19j XP
Based on BTC price of $79,097 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Weighing six performance factors, the Bitmain Antminer S21 XP Hyd comes out ahead — it takes 4 of 6 (efficiency, hashrate, home mining score, noise level). Where it pulls away hardest is 213% more hashrate (473 vs 151 TH/s). The Bitmain Bitcoin Miner S19j XP 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 S21 XP Hyd and Bitmain Bitcoin Miner S19j XP actually differ, with the gap quantified:
- Bitmain Antminer S21 XP Hyd 213% more hashrate (473 vs 151 TH/s)
- Bitmain Bitcoin Miner S19j XP 43% better power draw (5,676 vs 3,247 W)
- Bitmain Antminer S21 XP Hyd 44% better efficiency (12.0 vs 21.5 J/TH)
- Bitmain Antminer S21 XP Hyd 75% more heat output (19,367 vs 11,079 BTU/hr)
- Bitmain Antminer S21 XP Hyd 100% more home mining score (44.0 vs 22.0)
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 S21 XP Hyd | Metric | Bitmain Bitcoin Miner S19j XP |
|---|---|---|
| $5,099 | Upfront cost (MSRP) | $999 |
| $3.59 | Daily net profit | -$2.30 |
| -$3,787 | Net after 1 year | -$1,837 |
| -$2,475 | Net after 2 years | -$2,675 |
| -$1,163 | Net after 3 years | -$3,514 |
| Takes ~3.9 years to pay back at current rates | 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
Bitmain Antminer S21 XP Hyd$5.89/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 S21 XP Hyd or the Bitmain Bitcoin Miner S19j XP?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 XP Hyd is more profitable at $3.59/day compared to $-2.30/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.
Which is quieter, the Bitmain Antminer S21 XP Hyd or Bitmain Bitcoin Miner S19j XP?
The Bitmain Antminer S21 XP Hyd is quieter at 50 dB compared to the Bitmain Bitcoin Miner S19j XP at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S21 XP Hyd vs Bitmain Bitcoin Miner S19j XP: which fits a residential setup better?
The Bitmain Antminer S21 XP Hyd scores 44/100 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.
How far apart are the Bitmain Antminer S21 XP Hyd and Bitmain Bitcoin Miner S19j XP on J/TH?
The Bitmain Antminer S21 XP Hyd runs at 12.0 J/TH while the Bitmain Bitcoin Miner S19j XP runs at 21.5 J/TH — a difference of 9.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 44% better efficiency (12.0 vs 21.5 J/TH).