Bitmain Antminer S21 Immersion (301Th) vs Bitmain Antminer T9+ (10.5Th)
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21 Immersion (301Th) | Specification | Bitmain Antminer T9+ (10.5Th) |
|---|---|---|
| 301.0 TH/s | Hashrate | 10.5 TH/s |
| 5,569 W | Power Consumption | 1,432 W |
| 18.5 J/TH | Efficiency | 136.4 J/TH |
| 50 dB | Noise Level | — |
| 17.2 kg | Weight | 4,200.0 kg |
| 19,001 BTU/hr | BTU Output | 4,886 BTU/hr |
| 44/100 | Home Mining Score | 31/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | Bitmain |
Profitability Comparison
Bitmain Antminer S21 Immersion (301Th)
Bitmain Antminer T9+ (10.5Th)
Based on BTC price of $79,090 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21 Immersion (301Th) wins on 5 of 6 factors (efficiency, hashrate, home mining score, noise level, price-performance). Its biggest concrete edge: 2767% more hashrate (301.0 vs 10.5 TH/s). The Bitmain Antminer T9+ (10.5Th) claws back ground on power consumption. Cross-check the spec deltas and ROI table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the Bitmain Antminer S21 Immersion (301Th) and Bitmain Antminer T9+ (10.5Th) actually differ, with the gap quantified:
- Bitmain Antminer S21 Immersion (301Th) 2767% more hashrate (301.0 vs 10.5 TH/s)
- Bitmain Antminer T9+ (10.5Th) 74% better power draw (5,569 vs 1,432 W)
- Bitmain Antminer S21 Immersion (301Th) 86% better efficiency (18.5 vs 136.4 J/TH)
- Bitmain Antminer S21 Immersion (301Th) 100% better weight (17.2 vs 4,200.0 kg)
- Bitmain Antminer S21 Immersion (301Th) 289% more heat output (19,001 vs 4,886 BTU/hr)
- Bitmain Antminer S21 Immersion (301Th) 42% more home mining score (44.0 vs 31.0)
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 S21 Immersion (301Th) | Metric | Bitmain Antminer T9+ (10.5Th) |
|---|---|---|
| $3,333 | Upfront cost (MSRP) | $955 |
| -$2.41 | Daily net profit | -$3.05 |
| -$4,212 | Net after 1 year | -$2,070 |
| -$5,092 | Net after 2 years | -$3,185 |
| -$5,972 | Net after 3 years | -$4,300 |
| 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
Bitmain Antminer S21 Immersion (301Th)Score: 44/100. 50 dB noise level.
Best for Efficiency
Bitmain Antminer S21 Immersion (301Th)18.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S21 Immersion (301Th) vs Bitmain Antminer T9+ (10.5Th): which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21 Immersion (301Th) is more profitable at $-2.41/day compared to $-3.05/day for the Bitmain Antminer T9+ (10.5Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S21 Immersion (301Th) or the Bitmain Antminer T9+ (10.5Th) better for noise-sensitive spaces?
The Bitmain Antminer S21 Immersion (301Th) is quieter at 50 dB compared to the Bitmain Antminer T9+ (10.5Th) at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S21 Immersion (301Th) vs Bitmain Antminer T9+ (10.5Th): which fits a residential setup better?
The Bitmain Antminer S21 Immersion (301Th) scores 44/100 on our Home Mining Score (vs 31/100 for the Bitmain Antminer T9+ (10.5Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S21 Immersion (301Th) vs Bitmain Antminer T9+ (10.5Th): how much does the efficiency gap matter?
The Bitmain Antminer S21 Immersion (301Th) runs at 18.5 J/TH while the Bitmain Antminer T9+ (10.5Th) runs at 136.4 J/TH — a difference of 117.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 86% better efficiency (18.5 vs 136.4 J/TH).
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