Antminer S21+ vs NerdQAxe
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| Antminer S21+ | Specification | NerdQAxe |
|---|---|---|
| 216.0 TH/s | Taux de hachage | 2.0 TH/s |
| 3,564 W | Consommation électrique | 80 W |
| 16.5 J/TH | Efficiency | 40.0 J/TH |
| 75 dB | Niveau de bruit | 40 dB |
| 15.0 kg | Weight | 0.4 kg |
| 12,160 BTU/hr | BTU Output | 273 BTU/hr |
| 30/100 | Home Mining Score | 71/100 |
| — | Release Year | — |
| SHA-256 | Algorithme | SHA-256 |
| Bitmain | Manufacturer | D-Central |
Profitability Comparison
Antminer S21+
NerdQAxe
Based on BTC price of $78,179 and current network difficulty as of May 17, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the Antminer S21+, which leads on 3 of 6 weighted factors (efficacité, hashrate, rapport qualité-prix). Its biggest concrete edge: 10700% more hashrate (216.0 vs 2.0 TH/s). The NerdQAxe claws back ground on 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
Here is every spec where the Antminer S21+ and NerdQAxe actually differ, with the gap quantified:
- Antminer S21+ 10700% more hashrate (216.0 vs 2.0 TH/s)
- NerdQAxe 98% better power draw (3,564.0 vs 80.0 W)
- Antminer S21+ 59% better efficacité (16.5 vs 40.0 J/TH)
- NerdQAxe 47% better noise (75.0 vs 40.0 dB)
- NerdQAxe 97% better weight (15.0 vs 0.4 kg)
- Antminer S21+ 4354% more heat output (12,160 vs 273 BTU/hr)
- NerdQAxe 137% more score de minage domestique (30.0 vs 71.0)
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.
| Antminer S21+ | Metric | NerdQAxe |
|---|---|---|
| $6,500 | Upfront cost (MSRP) | $249 |
| -$0.78 | Daily net profit | -$0.12 |
| -$6,786 | Net after 1 year | -$293 |
| -$7,071 | Net after 2 years | -$337 |
| -$7,357 | Net after 3 years | -$380 |
| 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
NerdQAxeScore: 71/100. 40 dB noise level.
Best for Efficiency
Antminer S21+16.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the Antminer S21+ or NerdQAxe more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the NerdQAxe is more profitable at $-0.12/day compared to $-0.78/day for the Antminer S21+. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the Antminer S21+ or the NerdQAxe better for noise-sensitive spaces?
The NerdQAxe is quieter at 40 dB compared to the Antminer S21+ at 75 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 NerdQAxe?
The NerdQAxe scores 71/100 on our Home Mining Score (vs 30/100 for the Antminer S21+). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.
How far apart are the Antminer S21+ and NerdQAxe on J/TH?
The Antminer S21+ runs at 16.5 J/TH while the NerdQAxe runs at 40.0 J/TH — a difference of 23.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 59% better efficacité (16.5 vs 40.0 J/TH).