MicroBT Whatsminer M21S vs MicroBT Whatsminer M61
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21S | Specification | MicroBT Whatsminer M61 |
|---|---|---|
| 56.0 TH/s | Hashrate | 200.0 TH/s |
| 3,360 W | Power Consumption | 3,980 W |
| 60.0 J/TH | Efficiency | 19.9 J/TH |
| — | Noise Level | 75 dB |
| 12,500.0 kg | Weight | 13.5 kg |
| 11,464 BTU/hr | BTU Output | 13,580 BTU/hr |
| 22/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M21S
MicroBT Whatsminer M61
Based on BTC price of $78,880 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Run the numbers across every spec and the MicroBT Whatsminer M61 edges it: 5 of 6 factors go its way (efficiency, hashrate, home mining score, noise level, price-performance). The standout gap is 257% more hashrate (56.0 vs 200.0 TH/s) in the MicroBT Whatsminer M61's favour. The MicroBT Whatsminer M21S 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
Stripped to the numbers, this is how far apart the MicroBT Whatsminer M21S and MicroBT Whatsminer M61 sit on each measurable spec:
- MicroBT Whatsminer M61 257% more hashrate (56.0 vs 200.0 TH/s)
- MicroBT Whatsminer M21S 16% better power draw (3,360 vs 3,980 W)
- MicroBT Whatsminer M61 67% better efficiency (60.0 vs 19.9 J/TH)
- MicroBT Whatsminer M61 100% better weight (12,500.0 vs 13.5 kg)
- MicroBT Whatsminer M61 18% more heat output (11,464 vs 13,580 BTU/hr)
- MicroBT Whatsminer M61 36% more home mining score (22.0 vs 30.0)
Cost & ROI Over Time
A miner pays for itself in profit, not specs. These projections track upfront cost against one, two and three years of net earnings at $0.10/kWh.
| MicroBT Whatsminer M21S | Metric | MicroBT Whatsminer M61 |
|---|---|---|
| $650 | Upfront cost (MSRP) | $2,200 |
| -$5.97 | Daily net profit | -$2.07 |
| -$2,828 | Net after 1 year | -$2,954 |
| -$5,006 | Net after 2 years | -$3,708 |
| -$7,185 | Net after 3 years | -$4,462 |
| 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
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
Is the MicroBT Whatsminer M21S or MicroBT Whatsminer M61 more profitable?
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 $-5.97/day for the MicroBT Whatsminer M21S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the MicroBT Whatsminer M21S or the MicroBT Whatsminer M61 better for noise-sensitive spaces?
The MicroBT Whatsminer M61 is quieter at 75 dB compared to the MicroBT Whatsminer M21S at 0 dB. For home mining, lower noise levels make a significant difference in livability.
MicroBT Whatsminer M21S vs MicroBT Whatsminer M61: which fits a residential setup better?
The MicroBT Whatsminer M61 scores 30/100 on our Home Mining Score (vs 22/100 for the MicroBT Whatsminer M21S). 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 MicroBT Whatsminer M21S and MicroBT Whatsminer M61?
The MicroBT Whatsminer M21S 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).