MicroBT Whatsminer M20S vs MicroBT WhatsMiner M78
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M20S | Specification | MicroBT WhatsMiner M78 |
|---|---|---|
| 68.0 TH/s | Hashrate | 464.0 TH/s |
| 3,360 W | Power Consumption | 6,728 W |
| 49.4 J/TH | Efficiency | 14.5 J/TH |
| — | Noise Level | 75 dB |
| 12,500.0 kg | Weight | 18.0 kg |
| 11,464 BTU/hr | BTU Output | 22,956 BTU/hr |
| 22/100 | Home Mining Score | 30/100 |
| — | Release Year | — |
| SHA-256 | Algorithm | SHA-256 |
| MicroBT | Manufacturer | MicroBT |
Profitability Comparison
MicroBT Whatsminer M20S
MicroBT WhatsMiner M78
Based on BTC price of $79,078 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the MicroBT WhatsMiner M78 wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). The standout gap is 582% more hashrate (68.0 vs 464.0 TH/s) in the MicroBT WhatsMiner M78's favour. That said, the MicroBT Whatsminer M20S isn't beaten everywhere — it still wins power consumption. The right pick still depends on your power cost and noise tolerance — the breakdowns above make that call concrete.
Spec Deltas
The MicroBT Whatsminer M20S and MicroBT WhatsMiner M78 diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT WhatsMiner M78 582% more hashrate (68.0 vs 464.0 TH/s)
- MicroBT Whatsminer M20S 50% better power draw (3,360 vs 6,728 W)
- MicroBT WhatsMiner M78 71% better efficiency (49.4 vs 14.5 J/TH)
- MicroBT WhatsMiner M78 100% better weight (12,500.0 vs 18.0 kg)
- MicroBT WhatsMiner M78 100% more heat output (11,464 vs 22,956 BTU/hr)
- MicroBT WhatsMiner M78 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 M20S | Metric | MicroBT WhatsMiner M78 |
|---|---|---|
| $66 | Upfront cost (MSRP) | — |
| -$5.51 | Daily net profit | $1.26 |
| -$2,078 | Net after 1 year | +$462 |
| -$4,090 | Net after 2 years | +$923 |
| -$6,102 | Net after 3 years | +$1,385 |
| 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
MicroBT WhatsMiner M78$6.78/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M78Score: 30/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M7814.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Is the MicroBT Whatsminer M20S or MicroBT WhatsMiner M78 more profitable?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M78 is more profitable at $1.26/day compared to $-5.51/day for the MicroBT Whatsminer M20S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Is the MicroBT Whatsminer M20S or the MicroBT WhatsMiner M78 better for noise-sensitive spaces?
The MicroBT WhatsMiner M78 is quieter at 75 dB compared to the MicroBT Whatsminer M20S at 0 dB. For home mining, lower noise levels make a significant difference in livability.
MicroBT Whatsminer M20S vs MicroBT WhatsMiner M78: which fits a residential setup better?
The MicroBT WhatsMiner M78 scores 30/100 on our Home Mining Score (vs 22/100 for the MicroBT Whatsminer M20S). 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 M20S and MicroBT WhatsMiner M78?
The MicroBT Whatsminer M20S runs at 49.4 J/TH while the MicroBT WhatsMiner M78 runs at 14.5 J/TH — a difference of 34.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 71% better efficiency (49.4 vs 14.5 J/TH).