Bitmain Antminer S21+ Hyd (358Th) vs NerdAxe
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Bitmain Antminer S21+ Hyd (358Th) | Specification | NerdAxe |
|---|---|---|
| 358.0 TH/s | Taux de hachage | 500.0 GH/s |
| 5,370 W | Consommation électrique | 12 W |
| 15.0 J/TH | Efficiency | 24.0 J/TH |
| 50 dB | Niveau de bruit | 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 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Bitmain Antminer S21+ Hyd (358Th)
NerdAxe
Based on BTC price of $76,715 and current network difficulty as of May 26, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Bitmain Antminer S21+ Hyd (358Th), which leads on 3 of 6 weighted factors (efficacité, hashrate, rapport qualité-prix). The standout gap is 71500% more hashrate (358.0 vs 0.5 TH/s) in the Bitmain Antminer S21+ Hyd (358Th)'s favour. The NerdAxe holds the edge in consommation électrique and score de minage domestique and niveau sonore. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.
Spec Deltas
The Bitmain Antminer S21+ Hyd (358Th) and NerdAxe diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- Bitmain Antminer S21+ Hyd (358Th) 71500% more hashrate (358.0 vs 0.5 TH/s)
- NerdAxe 100% better power draw (5,370.0 vs 12.0 W)
- Bitmain Antminer S21+ Hyd (358Th) 38% better efficacité (15.0 vs 24.0 J/TH)
- NerdAxe 40% better noise (50.0 vs 30.0 dB)
- NerdAxe 98% 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)
- NerdAxe 59% more score de minage domestique (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 | NerdAxe |
|---|---|---|
| $2,757 | Upfront cost (MSRP) | $69 |
| -$0.25 | Daily net profit | -$0.01 |
| -$2,848 | Net after 1 year | -$73 |
| -$2,939 | Net after 2 years | -$77 |
| -$3,030 | Net after 3 years | -$81 |
| 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
NerdAxeScore: 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
Which makes more money, the Bitmain Antminer S21+ Hyd (358Th) or the NerdAxe?
At the current BTC price and a $0.10/kWh electricity rate, the NerdAxe is more profitable at $-0.01/day compared to $-0.25/day for the Bitmain Antminer S21+ Hyd (358Th). Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Bitmain Antminer S21+ Hyd (358Th) vs NerdAxe: which runs at a lower noise level?
The NerdAxe 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.
Bitmain Antminer S21+ Hyd (358Th) vs NerdAxe: which fits a residential setup better?
The NerdAxe 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.
What is the efficiency difference between Bitmain Antminer S21+ Hyd (358Th) and NerdAxe?
The Bitmain Antminer S21+ Hyd (358Th) runs at 15.0 J/TH while the NerdAxe 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 efficacité (15.0 vs 24.0 J/TH).