MicroBT Whatsminer M21 vs MicroBT Whatsminer M61
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21 | Specification | MicroBT Whatsminer M61 |
|---|---|---|
| 31.0 TH/s | Hashrate | 200.0 TH/s |
| 1,860 W | Power Consumption | 3,980 W |
| 60.0 J/TH | Efficiency | 19.9 J/TH |
| — | Noise Level | 75 dB |
| 7,150.0 kg | Weight | 13.5 kg |
| 6,346 BTU/hr | BTU Output | 13,580 BTU/hr |
| 28/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21
MicroBT Whatsminer M61
Based on BTC price of $78,880 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT Whatsminer M61 comes out ahead — it takes 4 of 5 (efficiency, hashrate, home mining score, noise level). Its biggest concrete edge: 545% more hashrate (31.0 vs 200.0 TH/s). The MicroBT Whatsminer M21 claws back ground on power consumption. 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 MicroBT Whatsminer M21 and MicroBT Whatsminer M61 actually differ, with the gap quantified:
- MicroBT Whatsminer M61 545% more hashrate (31.0 vs 200.0 TH/s)
- MicroBT Whatsminer M21 53% better power draw (1,860 vs 3,980 W)
- MicroBT Whatsminer M61 67% better efficiency (60.0 vs 19.9 J/TH)
- MicroBT Whatsminer M61 100% better weight (7,150.0 vs 13.5 kg)
- MicroBT Whatsminer M61 114% more heat output (6,346 vs 13,580 BTU/hr)
- MicroBT Whatsminer M61 7% more home mining score (28.0 vs 30.0)
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.
| MicroBT Whatsminer M21 | Metric | MicroBT Whatsminer M61 |
|---|---|---|
| — | Upfront cost (MSRP) | $2,200 |
| -$3.30 | Daily net profit | -$2.07 |
| -$1,206 | Net after 1 year | -$2,954 |
| -$2,412 | Net after 2 years | -$3,708 |
| -$3,617 | Net after 3 years | -$4,462 |
| — | 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
MicroBT Whatsminer M61Score: 30/100. 75 dB noise level.
Best for Efficiency
MicroBT Whatsminer M6119.9 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the MicroBT Whatsminer M21 or the MicroBT Whatsminer M61?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT Whatsminer M61 is more profitable at $-2.07/day compared to $-3.30/day for the MicroBT Whatsminer M21. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
MicroBT Whatsminer M21 vs MicroBT Whatsminer M61: which runs at a lower noise level?
The MicroBT Whatsminer M61 is quieter at 75 dB compared to the MicroBT Whatsminer M21 at 0 dB. For home mining, lower noise levels make a significant difference in livability.
For mining at home, should I pick the MicroBT Whatsminer M21 or the MicroBT Whatsminer M61?
The MicroBT Whatsminer M61 scores 30/100 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.
How far apart are the MicroBT Whatsminer M21 and MicroBT Whatsminer M61 on J/TH?
The MicroBT Whatsminer M21 runs at 60.0 J/TH while the MicroBT Whatsminer M61 runs at 19.9 J/TH — a difference of 40.1 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 67% better efficiency (60.0 vs 19.9 J/TH).