Bitmain Antminer S21+ Hyd (358Th) vs NerdNOS
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21+ Hyd (358Th) | Specification | NerdNOS |
|---|---|---|
| 358.0 TH/s | Hashrate | 500.0 GH/s |
| 5,370 W | Power Consumption | 12 W |
| 15.0 J/TH | Efficiency | 24.0 J/TH |
| 50 dB | Noise Level | 30 dB |
| 12.8 kg | Weight | 0.2 kg |
| 18,322 BTU/hr | BTU Output | 41 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)
NerdNOS
Based on BTC price of $79,066 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the Bitmain Antminer S21+ Hyd (358Th) wins on 3 of 6 factors (efficiency, hashrate, price-performance). Its biggest concrete edge: 71500% more hashrate (358.0 vs 0.5 TH/s). The NerdNOS claws back ground on power consumption and home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
Stripped to the numbers, this is how far apart the Bitmain Antminer S21+ Hyd (358Th) and NerdNOS sit on each measurable spec:
- Bitmain Antminer S21+ Hyd (358Th) 71500% more hashrate (358.0 vs 0.5 TH/s)
- NerdNOS 100% better power draw (5,370.0 vs 12.0 W)
- Bitmain Antminer S21+ Hyd (358Th) 38% better efficiency (15.0 vs 24.0 J/TH)
- NerdNOS 40% better noise (50.0 vs 30.0 dB)
- NerdNOS 99% better weight (12.8 vs 0.2 kg)
- Bitmain Antminer S21+ Hyd (358Th) 44698% more heat output (18,322.4 vs 40.9 BTU/hr)
- NerdNOS 59% more home mining score (44.0 vs 70.0)
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+ Hyd (358Th) | Metric | NerdNOS |
|---|---|---|
| $2,757 | Upfront cost (MSRP) | $59 |
| $0.14 | Daily net profit | -$0.01 |
| -$2,707 | Net after 1 year | -$63 |
| -$2,656 | Net after 2 years | -$67 |
| -$2,606 | Net after 3 years | -$71 |
| Takes ~54.8 years to pay back at current rates | 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
Bitmain Antminer S21+ Hyd (358Th)$0.15/day higher profit at current rates.
Best for Home Mining
NerdNOSScore: 70/100. 30 dB noise level.
Best for Efficiency
Bitmain Antminer S21+ Hyd (358Th)15.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Bitmain Antminer S21+ Hyd (358Th) or NerdNOS more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the Bitmain Antminer S21+ Hyd (358Th) is more profitable at $0.14/day compared to $-0.01/day for the NerdNOS. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Bitmain Antminer S21+ Hyd (358Th) or the NerdNOS better for noise-sensitive spaces?
The NerdNOS is quieter at 30 dB compared to the Bitmain Antminer S21+ Hyd (358Th) at 50 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the Bitmain Antminer S21+ Hyd (358Th) or the NerdNOS?
The NerdNOS 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 NerdNOS: how much does the efficiency gap matter?
The Bitmain Antminer S21+ Hyd (358Th) runs at 15.0 J/TH while the NerdNOS runs at 24.0 J/TH — a difference of 9.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 38% better efficiency (15.0 vs 24.0 J/TH).