Bitmain Antminer S17 Pro (50Th) vs Antminer S21 Pro
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S17 Pro (50Th) | Specification | Antminer S21 Pro |
|---|---|---|
| 50.0 TH/s | Taux de hachage | 234.0 TH/s |
| 1,975 W | Consommation électrique | 3,510 W |
| 39.5 J/TH | Efficiency | 15.0 J/TH |
| — | Niveau de bruit | 75 dB |
| 9,500.0 kg | Weight | 15.0 kg |
| 6,739 BTU/hr | BTU Output | 11,976 BTU/hr |
| 28/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S17 Pro (50Th)
Antminer S21 Pro
Based on BTC price of $77,884 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Antminer S21 Pro edges it: 4 of 6 factors go its way (efficacité, hashrate, score de minage domestique, niveau sonore). The standout gap is 368% more hashrate (50.0 vs 234.0 TH/s) in the Antminer S21 Pro's favour. The Bitmain Antminer S17 Pro (50Th) 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 S17 Pro (50Th) and Antminer S21 Pro sit on each measurable spec:
- Antminer S21 Pro 368% more hashrate (50.0 vs 234.0 TH/s)
- Bitmain Antminer S17 Pro (50Th) 44% better power draw (1,975 vs 3,510 W)
- Antminer S21 Pro 62% better efficacité (39.5 vs 15.0 J/TH)
- Antminer S21 Pro 100% better weight (9,500.0 vs 15.0 kg)
- Antminer S21 Pro 78% more heat output (6,739 vs 11,976 BTU/hr)
- Antminer S21 Pro 7% more score de minage domestique (28.0 vs 30.0)
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 S17 Pro (50Th) | Metric | Antminer S21 Pro |
|---|---|---|
| $413 | Upfront cost (MSRP) | $6,800 |
| -$2.95 | Daily net profit | -$0.04 |
| -$1,489 | Net after 1 year | -$6,814 |
| -$2,565 | Net after 2 years | -$6,827 |
| -$3,641 | Net after 3 years | -$6,841 |
| 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
Bitmain Antminer S17 Pro (50Th) vs Antminer S21 Pro: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 Pro is more profitable at $-0.04/day compared to $-2.95/day for the Bitmain Antminer S17 Pro (50Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S17 Pro (50Th) vs Antminer S21 Pro: which runs at a lower noise level?
The Antminer S21 Pro is quieter at 75 dB compared to the Bitmain Antminer S17 Pro (50Th) 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 S17 Pro (50Th) or the Antminer S21 Pro?
The Antminer S21 Pro scores 30/100 on our Home Mining Score (vs 28/100 for the Bitmain Antminer S17 Pro (50Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S17 Pro (50Th) vs Antminer S21 Pro: how much does the efficiency gap matter?
The Bitmain Antminer S17 Pro (50Th) runs at 39.5 J/TH while the Antminer S21 Pro runs at 15.0 J/TH — a difference of 24.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 62% better efficacité (39.5 vs 15.0 J/TH).