MicroBT Whatsminer M20S vs MicroBT WhatsMiner M78S
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M20S | Specification | MicroBT WhatsMiner M78S |
|---|---|---|
| 68.0 TH/s | Hashrate | 498.0 TH/s |
| 3,360 W | Power Consumption | 6,723 W |
| 49.4 J/TH | Efficiency | 13.5 J/TH |
| — | Noise Level | 75 dB |
| 12,500.0 kg | Weight | 18.0 kg |
| 11,464 BTU/hr | BTU Output | 22,939 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 M78S
Based on BTC price of $79,222 and current network difficulty as of May 15, 2026. Actual results vary.
Verdict
Based on our multi-factor analysis, the MicroBT WhatsMiner M78S wins on 4 of 5 factors (efficiency, hashrate, home mining score, noise level). The standout gap is 632% more hashrate (68.0 vs 498.0 TH/s) in the MicroBT WhatsMiner M78S's favour. The MicroBT Whatsminer M20S 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
The MicroBT Whatsminer M20S and MicroBT WhatsMiner M78S diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":
- MicroBT WhatsMiner M78S 632% more hashrate (68.0 vs 498.0 TH/s)
- MicroBT Whatsminer M20S 50% better power draw (3,360 vs 6,723 W)
- MicroBT WhatsMiner M78S 73% better efficiency (49.4 vs 13.5 J/TH)
- MicroBT WhatsMiner M78S 100% better weight (12,500.0 vs 18.0 kg)
- MicroBT WhatsMiner M78S 100% more heat output (11,464 vs 22,939 BTU/hr)
- MicroBT WhatsMiner M78S 36% more home mining score (22.0 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 M20S | Metric | MicroBT WhatsMiner M78S |
|---|---|---|
| $66 | Upfront cost (MSRP) | — |
| -$5.51 | Daily net profit | $2.59 |
| -$2,076 | Net after 1 year | +$944 |
| -$4,087 | Net after 2 years | +$1,888 |
| -$6,097 | Net after 3 years | +$2,833 |
| 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 M78S$8.09/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M78SScore: 30/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M78S13.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the MicroBT Whatsminer M20S or the MicroBT WhatsMiner M78S?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M78S is more profitable at $2.59/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.
MicroBT Whatsminer M20S vs MicroBT WhatsMiner M78S: which runs at a lower noise level?
The MicroBT WhatsMiner M78S 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.
Which is better for home mining, the MicroBT Whatsminer M20S or MicroBT WhatsMiner M78S?
The MicroBT WhatsMiner M78S 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 M78S?
The MicroBT Whatsminer M20S runs at 49.4 J/TH while the MicroBT WhatsMiner M78S runs at 13.5 J/TH — a difference of 35.9 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 73% better efficiency (49.4 vs 13.5 J/TH).