Bitmain Antminer S21+ Hyd (358Th) vs Bitaxe Gamma
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21+ Hyd (358Th) | Specification | Bitaxe Gamma |
|---|---|---|
| 358.0 TH/s | Hashrate | 1,200.0 GH/s |
| 5,370 W | Power Consumption | 15 W |
| 15.0 J/TH | Efficiency | 12.5 J/TH |
| 50 dB | Noise Level | 38 dB |
| 12.8 kg | Weight | 0.3 kg |
| 18,322 BTU/hr | BTU Output | 51 BTU/hr |
| 44/100 | Home Mining Score | 70/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Bitmain Antminer S21+ Hyd (358Th)
Bitaxe Gamma
Based on BTC price of $79,123 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the Bitaxe Gamma edges it: 4 of 6 factors go its way (efficiency, power consumption, home mining score, noise level). Its biggest concrete edge: 100% better power draw (5,370.0 vs 15.0 W). The Bitmain Antminer S21+ Hyd (358Th) holds the edge in hashrate and price-performance. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The Bitmain Antminer S21+ Hyd (358Th) and Bitaxe Gamma diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S21+ Hyd (358Th) 29733% more hashrate (358.0 vs 1.2 TH/s)
- Bitaxe Gamma 100% better power draw (5,370.0 vs 15.0 W)
- Bitaxe Gamma 17% better efficiency (15.0 vs 12.5 J/TH)
- Bitaxe Gamma 24% better noise (50.0 vs 38.0 dB)
- Bitaxe Gamma 98% better weight (12.8 vs 0.3 kg)
- Bitmain Antminer S21+ Hyd (358Th) 35686% more heat output (18,322.4 vs 51.2 BTU/hr)
- Bitaxe Gamma 59% more home mining score (44.0 vs 70.0)
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 S21+ Hyd (358Th) | Metric | Bitaxe Gamma |
|---|---|---|
| $2,757 | Upfront cost (MSRP) | $99 |
| $0.15 | Daily net profit | $0.01 |
| -$2,703 | Net after 1 year | -$96 |
| -$2,650 | Net after 2 years | -$93 |
| -$2,596 | Net after 3 years | -$91 |
| Takes ~51.3 years to pay back at current rates | Payback period | Takes ~35.3 years to pay back at current rates |
At the default rate, the Bitaxe Gamma reaches break-even first — but plug in your own electricity cost above, since payback shifts sharply with it.
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
Bitmain Antminer S21+ Hyd (358Th)$0.14/day higher profit at current rates.
Best for Home Mining
Bitaxe GammaScore: 70/100. 38 dB noise level.
Best for Efficiency
Bitaxe Gamma12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Bitmain Antminer S21+ Hyd (358Th) vs Bitaxe Gamma: which one earns more per day?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21+ Hyd (358Th) is more profitable at $0.15/day compared to $0.01/day for the Bitaxe Gamma. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the Bitmain Antminer S21+ Hyd (358Th) or Bitaxe Gamma?
The Bitaxe Gamma is quieter at 38 dB compared to the Bitmain Antminer S21+ Hyd (358Th) at 50 dB. For home mining, lower noise levels make a significant difference in livability.
Bitmain Antminer S21+ Hyd (358Th) vs Bitaxe Gamma: which fits a residential setup better?
The Bitaxe Gamma scores 70/100 on our Home Mining Score (vs 44/100 for the Bitmain Antminer S21+ Hyd (358Th)). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
Bitmain Antminer S21+ Hyd (358Th) vs Bitaxe Gamma: how much does the efficiency gap matter?
The Bitmain Antminer S21+ Hyd (358Th) runs at 15.0 J/TH while the Bitaxe Gamma runs at 12.5 J/TH — a difference of 2.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 17% better efficiency (15.0 vs 12.5 J/TH).