NerdAxe vs MicroBT Whatsminer M21
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| NerdAxe | Specification | MicroBT Whatsminer M21 |
|---|---|---|
| 500.0 GH/s | Hashrate | 31.0 TH/s |
| 12 W | Power Consumption | 1,860 W |
| 24.0 J/TH | Efficiency | 60.0 J/TH |
| 30 dB | Noise Level | — |
| 0.2 kg | Weight | 7,150.0 kg |
| 41 BTU/hr | BTU Output | 6,346 BTU/hr |
| 70/100 | Home Mining Score | 28/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| D-Central | Manufacturer | MicroBT |
Profitability Comparison
NerdAxe
MicroBT Whatsminer M21
Based on BTC price of $78,001 and current network difficulty as of May 16, 2026. Actual results vary.
Verdict
Our scoring model gives the nod to the NerdAxe, which leads on 4 of 5 weighted factors (efficiency, power consumption, home mining score, noise level). Its biggest concrete edge: 99% better power draw (12.0 vs 1,860.0 W). The MicroBT Whatsminer M21 claws back ground on hashrate. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
Here is every spec where the NerdAxe and MicroBT Whatsminer M21 actually differ, with the gap quantified:
- MicroBT Whatsminer M21 6100% more hashrate (0.5 vs 31.0 TH/s)
- NerdAxe 99% better power draw (12.0 vs 1,860.0 W)
- NerdAxe 60% better efficiency (24.0 vs 60.0 J/TH)
- NerdAxe 100% better weight (0.2 vs 7,150.0 kg)
- MicroBT Whatsminer M21 15417% more heat output (40.9 vs 6,346.3 BTU/hr)
- NerdAxe 150% more home mining score (70.0 vs 28.0)
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.
| NerdAxe | Metric | MicroBT Whatsminer M21 |
|---|---|---|
| $69 | Upfront cost (MSRP) | — |
| -$0.01 | Daily net profit | -$3.35 |
| -$73 | Net after 1 year | -$1,223 |
| -$77 | Net after 2 years | -$2,446 |
| -$81 | Net after 3 years | -$3,670 |
| Does not pay back at current rates (negative daily profit) | Payback period | — |
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
NerdAxe24.0 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the NerdAxe or the MicroBT Whatsminer M21?
At the current BTC price and a $0.10/kWh electricity rate, the NerdAxe is more profitable at $-0.01/day compared to $-3.35/day for the MicroBT Whatsminer M21. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the NerdAxe or the MicroBT Whatsminer M21 better for noise-sensitive spaces?
The NerdAxe is quieter at 30 dB compared to the MicroBT Whatsminer M21 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
Which is better for home mining, the NerdAxe or MicroBT Whatsminer M21?
The NerdAxe scores 70/100 on our Home Mining Score (vs 28/100 for the MicroBT Whatsminer M21). 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 NerdAxe and MicroBT Whatsminer M21?
The NerdAxe runs at 24.0 J/TH while the MicroBT Whatsminer M21 runs at 60.0 J/TH — a difference of 36.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 60% better efficiency (24.0 vs 60.0 J/TH).