Bitmain Antminer S19j (90Th) vs Antminer S21 Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19j (90Th) | Specification | Antminer S21 Pro |
|---|---|---|
| 90.0 TH/s | Taux de hachage | 234.0 TH/s |
| 3,250 W | Consommation électrique | 3,510 W |
| 36.1 J/TH | Efficiency | 15.0 J/TH |
| — | Niveau de bruit | 75 dB |
| 14.2 kg | Weight | 15.0 kg |
| 11,089 BTU/hr | BTU Output | 11,976 BTU/hr |
| 22/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S19j (90Th)
Antminer S21 Pro
Based on BTC price of $62,980 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Antminer S21 Pro l'emporte sur 4 des 6 facteurs (efficacité, hashrate, score de minage domestique, niveau sonore). Where it pulls away hardest is 160% more hashrate (90.0 vs 234.0 TH/s). That said, the Bitmain Antminer S19j (90Th) isn't beaten everywhere — it still wins consommation électrique and rapport qualité-prix. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Bitmain Antminer S19j (90Th) and Antminer S21 Pro diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Antminer S21 Pro 160% more hashrate (90.0 vs 234.0 TH/s)
- Bitmain Antminer S19j (90Th) 7% better power draw (3,250 vs 3,510 W)
- Antminer S21 Pro 58% better efficacité (36.1 vs 15.0 J/TH)
- Bitmain Antminer S19j (90Th) 5% better weight (14.2 vs 15.0 kg)
- Antminer S21 Pro 8% more heat output (11,089 vs 11,976 BTU/hr)
- Antminer S21 Pro 36% more score de minage domestique (22.0 vs 30.0)
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.
| Bitmain Antminer S19j (90Th) | Metric | Antminer S21 Pro |
|---|---|---|
| $405 | Upfront cost (MSRP) | $6,800 |
| -$5.24 | Daily net profit | -$1.76 |
| -$2,316 | Net after 1 year | -$7,441 |
| -$4,227 | Net after 2 years | -$8,082 |
| -$6,138 | Net after 3 years | -$8,724 |
| 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
Antminer S21 ProScore: 30/100. 75 dB noise level.
Best for Efficiency
Antminer S21 Pro15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S19j (90Th) or Antminer S21 Pro more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $-1.76/day compared to $-5.24/day for the Bitmain Antminer S19j (90Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S19j (90Th) or Antminer S21 Pro?
The Antminer S21 Pro is quieter at 75 dB compared to the Bitmain Antminer S19j (90Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the Bitmain Antminer S19j (90Th) or Antminer S21 Pro?
The Antminer S21 Pro scores 30/100 on our Home Mining Score (vs 22/100 for the Bitmain Antminer S19j (90Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S19j (90Th) vs Antminer S21 Pro: how much does the efficiency gap matter?
The Bitmain Antminer S19j (90Th) runs at 36.1 J/TH while the Antminer S21 Pro runs at 15.0 J/TH — a difference of 21.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 58% better efficacité (36.1 vs 15.0 J/TH).