Antminer S21 vs Innosilicon T3 39T
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21 | Specification | Innosilicon T3 39T |
|---|---|---|
| 200.0 TH/s | Taux de hachage | 39.0 TH/s |
| 3,500 W | Consommation électrique | 2,150 W |
| 17.5 J/TH | Efficiency | 55.1 J/TH |
| 75 dB | Niveau de bruit | — |
| 14.6 kg | Weight | 8.7 kg |
| 11,942 BTU/hr | BTU Output | 7,336 BTU/hr |
| 36/100 | Home Mining Score | 26/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | Innosilicon |
Profitability Comparison
Antminer S21
Innosilicon T3 39T
Based on BTC price of $63,093 and current network difficulty as of Jun 4, 2026. Actual results vary.
Verdict
Selon notre analyse multifactorielle, le Antminer S21 l'emporte sur 4 des 5 facteurs (efficacité, hashrate, score de minage domestique, niveau sonore). The standout gap is 413% more hashrate (200.0 vs 39.0 TH/s) in the Antminer S21's favour. The Innosilicon T3 39T claws back ground on consommation électrique. 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 Antminer S21 and Innosilicon T3 39T actually differ, with the gap quantified:
- Antminer S21 413% more hashrate (200.0 vs 39.0 TH/s)
- Innosilicon T3 39T 39% better power draw (3,500 vs 2,150 W)
- Antminer S21 68% better efficacité (17.5 vs 55.1 J/TH)
- Innosilicon T3 39T 40% better weight (14.6 vs 8.7 kg)
- Antminer S21 63% more heat output (11,942 vs 7,336 BTU/hr)
- Antminer S21 38% more score de minage domestique (36.0 vs 26.0)
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.
| Antminer S21 | Metric | Innosilicon T3 39T |
|---|---|---|
| $5,500 | Upfront cost (MSRP) | — |
| -$2.69 | Daily net profit | -$4.05 |
| -$6,482 | Net after 1 year | -$1,477 |
| -$7,465 | Net after 2 years | -$2,954 |
| -$8,447 | Net after 3 years | -$4,431 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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 S21Score: 36/100. 75 dB noise level.
Best for Efficiency
Antminer S2117.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the Antminer S21 or the Innosilicon T3 39T?
At the current BTC price and a $0.10/kWh electricity rate, the Antminer S21 is more profitable at $-2.69/day compared to $-4.05/day for the Innosilicon T3 39T. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Antminer S21 or Innosilicon T3 39T?
The Antminer S21 is quieter at 75 dB compared to the Innosilicon T3 39T at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Antminer S21 or the Innosilicon T3 39T?
The Antminer S21 scores 36/100 on our Home Mining Score (vs 26/100 for the Innosilicon T3 39T). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Antminer S21 vs Innosilicon T3 39T: how much does the efficiency gap matter?
The Antminer S21 runs at 17.5 J/TH while the Innosilicon T3 39T runs at 55.1 J/TH — a difference of 37.6 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 68% better efficacité (17.5 vs 55.1 J/TH).
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