MicroBT Whatsminer M21S vs MicroBT WhatsMiner M73S+
Side-by-side specs, profitability, and home mining comparison.
Specifications Comparison
| MicroBT Whatsminer M21S | Specification | MicroBT WhatsMiner M73S+ |
|---|---|---|
| 56.0 TH/s | Hashrate | 570.0 TH/s |
| 3,360 W | Power Consumption | 7,125 W |
| 60.0 J/TH | Efficiency | 12.5 J/TH |
| — | Noise Level | 75 dB |
| 12,500.0 kg | Weight | 29.5 kg |
| 11,464 BTU/hr | BTU Output | 24,311 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 M73S+
Based on BTC price of $77,922 and current network difficulty as of May 21, 2026. Actual results vary.
Verdict
Weighing six performance factors, the MicroBT WhatsMiner M73S+ comes out ahead — it takes 4 of 5 (efficiency, hashrate, home mining score, noise level). Its biggest concrete edge: 918% more hashrate (56.0 vs 570.0 TH/s). The MicroBT Whatsminer M21S claws back ground on power consumption. Cross-check the spec deltas and operating-cost table above against your own electricity rate before deciding.
Spec Deltas
Here is every spec where the MicroBT Whatsminer M21S and MicroBT WhatsMiner M73S+ actually differ, with the gap quantified:
- MicroBT WhatsMiner M73S+ 918% more hashrate (56.0 vs 570.0 TH/s)
- MicroBT Whatsminer M21S 53% better power draw (3,360 vs 7,125 W)
- MicroBT WhatsMiner M73S+ 79% better efficiency (60.0 vs 12.5 J/TH)
- MicroBT WhatsMiner M73S+ 100% better weight (12,500.0 vs 29.5 kg)
- MicroBT WhatsMiner M73S+ 112% more heat output (11,464 vs 24,311 BTU/hr)
- MicroBT WhatsMiner M73S+ 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 M21S | Metric | MicroBT WhatsMiner M73S+ |
|---|---|---|
| $650 | Upfront cost (MSRP) | — |
| -$6.06 | Daily net profit | $3.34 |
| -$2,860 | Net after 1 year | +$1,219 |
| -$5,071 | Net after 2 years | +$2,438 |
| -$7,281 | Net after 3 years | +$3,657 |
| 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 M73S+$9.40/day higher profit at current rates.
Best for Home Mining
MicroBT WhatsMiner M73S+Score: 30/100. 75 dB noise level.
Best for Efficiency
MicroBT WhatsMiner M73S+12.5 J/TH — lower electricity cost per terahash.
Frequently Asked Questions
Which makes more money, the MicroBT Whatsminer M21S or the MicroBT WhatsMiner M73S+?
At the current BTC price and a $0.10/kWh electricity rate, the MicroBT WhatsMiner M73S+ is more profitable at $3.34/day compared to $-6.06/day for the MicroBT Whatsminer M21S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.
Which is quieter, the MicroBT Whatsminer M21S or MicroBT WhatsMiner M73S+?
The MicroBT WhatsMiner M73S+ 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.
Which is better for home mining, the MicroBT Whatsminer M21S or MicroBT WhatsMiner M73S+?
The MicroBT WhatsMiner M73S+ 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.
How far apart are the MicroBT Whatsminer M21S and MicroBT WhatsMiner M73S+ on J/TH?
The MicroBT Whatsminer M21S runs at 60.0 J/TH while the MicroBT WhatsMiner M73S+ runs at 12.5 J/TH — a difference of 47.5 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 79% better efficiency (60.0 vs 12.5 J/TH).