Skip to content

We're upgrading our operations to serve you better. Orders ship as usual from Laval, QC. Questions? Contact us

Bitcoin accepted at checkout  |  Ships from Laval, QC, Canada  |  Expert support since 2016

1325 Rue Bergar, Laval, QC support@d-central.tech 1-855-753-9997 Mon-Fri: 8:30 - 18:00
Whatsminer M66S

Whatsminer M66S

Hashrate 298.0 TH/s Power 5,518 W Efficiency 18.5 J/TH
VS

MicroBT WhatsMiner M73S+

Hashrate 570.0 TH/s Power 7,125 W Efficiency 12.5 J/TH

Whatsminer M66S vs MicroBT WhatsMiner M73S+

Side-by-side specs, profitability, and home mining comparison.

Specifications Comparison

Whatsminer M66S Specification MicroBT WhatsMiner M73S+
298.0 TH/s Hashrate 570.0 TH/s
5,518 W Power Consumption 7,125 W
18.5 J/TH Efficiency 12.5 J/TH
50 dB Noise Level 75 dB
13.5 kg Weight 29.5 kg
18,827 BTU/hr BTU Output 24,311 BTU/hr
44/100 Home Mining Score 30/100
— Release Year —
SHA-256 Algorithm SHA-256
MicroBT Manufacturer MicroBT

Profitability Comparison

$/kWh

Whatsminer M66S

Daily Revenue 0.00013713 BTC $10.84
Daily Electricity -$13.24
Daily Profit -$2.40
Monthly -$72.08
Yearly -$876.94

MicroBT WhatsMiner M73S+

Daily Revenue 0.00026230 BTC $20.74
Daily Electricity -$17.10
Daily Profit $3.64
Monthly $109.06
Yearly $1,326.93

Based on BTC price of $79,051 and current network difficulty as of May 15, 2026. Actual results vary.

Verdict

Weighing six performance factors, the MicroBT WhatsMiner M73S+ comes out ahead — it takes 2 of 5 (efficiency, hashrate). Where it pulls away hardest is 91% more hashrate (298 vs 570 TH/s). The Whatsminer M66S holds the edge in power consumption and home mining score and noise level. Review the detailed specs and profitability calculations above to determine which miner best fits your specific setup.

Winner: MicroBT WhatsMiner M73S+ — wins on 3 of 5 factors

Spec Deltas

The Whatsminer M66S and MicroBT WhatsMiner M73S+ diverge on the metrics below — each gap expressed as a real percentage, not a vague "better":

  • MicroBT WhatsMiner M73S+ 91% more hashrate (298 vs 570 TH/s)
  • Whatsminer M66S 23% better power draw (5,518 vs 7,125 W)
  • MicroBT WhatsMiner M73S+ 33% better efficiency (18.5 vs 12.5 J/TH)
  • Whatsminer M66S 33% better noise (50.0 vs 75.0 dB)
  • Whatsminer M66S 54% better weight (13.5 vs 29.5 kg)
  • MicroBT WhatsMiner M73S+ 29% more heat output (18,827 vs 24,311 BTU/hr)
  • Whatsminer M66S 47% more home mining score (44.0 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.

Whatsminer M66S Metric MicroBT WhatsMiner M73S+
$8,000 Upfront cost (MSRP) —
-$2.40 Daily net profit $3.64
-$8,877 Net after 1 year +$1,327
-$9,754 Net after 2 years +$2,654
-$10,631 Net after 3 years +$3,981
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+

$6.04/day higher profit at current rates.

Best for Home Mining

Whatsminer M66S

Score: 44/100. 50 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 Whatsminer M66S 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 $3.64/day compared to $-2.40/day for the Whatsminer M66S. Profitability depends heavily on your electricity rate — use the selector above to calculate with your actual costs.

Which is quieter, the Whatsminer M66S or MicroBT WhatsMiner M73S+?

The Whatsminer M66S is quieter at 50 dB compared to the MicroBT WhatsMiner M73S+ at 75 dB. For home mining, lower noise levels make a significant difference in livability.

For mining at home, should I pick the Whatsminer M66S or the MicroBT WhatsMiner M73S+?

The Whatsminer M66S scores 44/100 on our Home Mining Score (vs 30/100 for the MicroBT WhatsMiner M73S+). This composite score factors in noise, power requirements, heat output, size, and setup ease — all critical for residential mining.

Whatsminer M66S vs MicroBT WhatsMiner M73S+: how much does the efficiency gap matter?

The Whatsminer M66S runs at 18.5 J/TH while the MicroBT WhatsMiner M73S+ runs at 12.5 J/TH — a difference of 6.0 J/TH. Lower efficiency means less electricity per terahash of mining power, directly reducing operating costs. In relative terms that is 33% better efficiency (18.5 vs 12.5 J/TH).

Compare Whatsminer M66S with...

Compare MicroBT WhatsMiner M73S+ with...

Shop Miners Browse our full catalog of ASIC miners, Bitaxe, and accessories. ASIC Repair 2,500+ miners repaired. Expert diagnostics and board-level repair. Miner Database Compare 500+ miners with live profitability data.