Bitmain Antminer S19j (90Th) vs Bitdeer SealMiner A2 Pro Air
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S19j (90Th) | Specification | Bitdeer SealMiner A2 Pro Air |
|---|---|---|
| 90.0 TH/s | Taux de hachage | 255.0 TH/s |
| 3,250 W | Consommation électrique | 3,790 W |
| 36.1 J/TH | Efficiency | 14.9 J/TH |
| — | Niveau de bruit | 75 dB |
| 14,200.0 kg | Weight | 15.5 kg |
| 11,089 BTU/hr | BTU Output | 12,932 BTU/hr |
| 22/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitdeer |
Profitability Comparison
Bitmain Antminer S19j (90Th)
Bitdeer SealMiner A2 Pro Air
Based on BTC price of $78,128 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Bitdeer SealMiner A2 Pro Air l'emporte sur 4 des 6 facteurs (efficacité, hashrate, score de minage domestique, niveau sonore). Where it pulls away hardest is 183% more hashrate (90.0 vs 255.0 TH/s). The Bitmain Antminer S19j (90Th) claws back ground on consommation électrique and rapport qualité-prix. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S19j (90Th) and Bitdeer SealMiner A2 Pro Air sit on each measurable spec:
- Bitdeer SealMiner A2 Pro Air 183% more hashrate (90.0 vs 255.0 TH/s)
- Bitmain Antminer S19j (90Th) 14% better power draw (3,250 vs 3,790 W)
- Bitdeer SealMiner A2 Pro Air 59% better efficacité (36.1 vs 14.9 J/TH)
- Bitdeer SealMiner A2 Pro Air 100% better weight (14,200.0 vs 15.5 kg)
- Bitdeer SealMiner A2 Pro Air 17% more heat output (11,089 vs 12,932 BTU/hr)
- Bitdeer SealMiner A2 Pro Air 36% more score de minage domestique (22.0 vs 30.0)
Cost & ROI Over Time
Sticker price versus what the miner actually earns back: the table below projects cumulative net profit at a $0.10/kWh electricity rate.
| Bitmain Antminer S19j (90Th) | Metric | Bitdeer SealMiner A2 Pro Air |
|---|---|---|
| $405 | Upfront cost (MSRP) | $4,000 |
| -$4.56 | Daily net profit | $0.07 |
| -$2,071 | Net after 1 year | -$3,974 |
| -$3,737 | Net after 2 years | -$3,947 |
| -$5,403 | Net after 3 years | -$3,921 |
| Does not pay back at current rates (negative daily profit) | Payback period | Takes ~152.1 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
Bitdeer SealMiner A2 Pro Air$4.64/day higher profit at current rates.
Best for Home Mining
Bitdeer SealMiner A2 Pro AirScore: 30/100. 75 dB noise level.
Best for Efficiency
Bitdeer SealMiner A2 Pro Air14.9 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S19j (90Th) vs Bitdeer SealMiner A2 Pro Air: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitdeer SealMiner A2 Pro Air is more profitable at $0.07/day compared to $-4.56/day for the Bitmain Antminer S19j (90Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S19j (90Th) or the Bitdeer SealMiner A2 Pro Air better for noise-sensitive spaces?
The Bitdeer SealMiner A2 Pro Air 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.
For mining at home, should I pick the Bitmain Antminer S19j (90Th) or the Bitdeer SealMiner A2 Pro Air?
The Bitdeer SealMiner A2 Pro Air 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.
How far apart are the Bitmain Antminer S19j (90Th) and Bitdeer SealMiner A2 Pro Air on J/TH?
The Bitmain Antminer S19j (90Th) runs at 36.1 J/TH while the Bitdeer SealMiner A2 Pro Air runs at 14.9 J/TH — a difference of 21.3 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 59% better efficacité (36.1 vs 14.9 J/TH).
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