Our rating: 4 / 5 (Fathom Labs sells this model)
This review covers the M73 itself, not the M73S or M73S+. Our rating is our editorial judgment based on MicroBT's published specifications. We do not fabricate ratings or profit projections.
Important: What the M73 Is Built For
The M73 is rated at 14.5 J/TH (for reference, the M70S is rated at ~13.5 J/TH and the M70 at ~14.5 J/TH). The M73's strengths are: (1) 470 to 526 TH/s raw hashrate in a single chassis; (2) hydro cooling that runs near silent; (3) high rack density for large scale operations. If you want an air cooled machine, the M70S and M70 are built for that setup.
Specs at a Glance#
- Manufacturer
- MicroBT
- Model
- Whatsminer M73
- Hashrate
- 470 to 526 TH/s (highest in M70 generation)
- Efficiency
- 14.5 J/TH
- Power Draw
- ~7,200 W
- Cooling
- Hydro cooled (liquid cooling loop required)
- Monthly electricity (at $0.07/kWh, 24/7)
- ~$362 (7.2 kW × 720h × $0.07)
- Price
- Quote on request: Whatsminer M73 availability and quote
Hashrate and Efficiency: Reading the Numbers#
The M73 offers up to ~2× the hashrate of the M70S (470 to 526 vs. ~264 TH/s) at ~2.06× the power draw (~7,200 W vs. a typical 3,500 W for the M70S, which draws about 3,140 to 5,000 W depending on power mode). In terms of electricity cost per TH:
- M70S at $0.07/kWh, 264 TH/s
- $0.668/TH/month
- M73 at $0.07/kWh, 526 TH/s
- $0.690/TH/month
Calculated as: (Power_kW × 720h × $0.07) ÷ TH/s. M70S at a typical 3,500 W draw: (3.5 × 720 × $0.07) ÷ 264 = $0.668. M73: (7.2 × 720 × $0.07) ÷ 526 = $0.690. These are electricity cost ratios only, not revenue figures.
At 14.5 J/TH, the electricity for one M73 at 526 TH/s is about $362 a month. The M73's economic case rests on density (more TH in one chassis) and operational benefits (quiet hydro cooling). For a similar hashrate, two M70S units (~516 TH/s combined) at a typical 3,500 W draw each come to about $353 a month across two chassis.
Why Hydro Cooling Matters#
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- Near silent operation:Hydro cooled machines replace industrial fans with liquid cooling loops. The result is a fraction of the noise compared to air cooled ASICs (~75 to 85 dB). For dense data center deployments or noise sensitive environments, this is a meaningful operational benefit.
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- Rack density:470 to 526 TH/s in a single chassis at ~7,200W, compared with two M70S units for similar hashrate (~516 TH/s) at two rack positions and ~7,000W combined at a typical 3,500 W draw each. For operators maximizing TH per unit of floor space, the M73's density is an advantage.
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- Heat management:Liquid cooling removes heat more efficiently than air, enabling stable operation in warm ambient environments without the same airflow requirements as air cooled machines.
Hosting the M73 at Fathom Labs#
Our Southeast Texas facility supports hydro cooled ASIC deployment. An M73 bought from Fathom Labs can be hosted at the same $0.07/kWh all in rate as our air cooled machines, plus the standard one time $30 installation fee (miners bought elsewhere: $0.08/kWh, minimum 10 units per order). Contact us to confirm hydro capacity and availability.
Who Should Buy the M73?#
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- Large scale operators maximizing hashrate per rack unit in density constrained facilities
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- Noise sensitive deployments where air cooled fan noise is a constraint
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- Operators with hydro infrastructure already in place looking to maximize TH in their facility
For first time and individual miners who prefer an air cooled setup, the Whatsminer M70S is a strong fit.