WhatsMiner M66S++ (339TH/s) vs Antminer S3 (478GH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
WhatsMiner M66S++ (339TH/s)
Option 2
Antminer S3 (478GH/s)
Antminer S3 (478GH/s) leads this comparison
Antminer S3 (478GH/s) comes out ahead on more buyer-facing signals here. WhatsMiner M66S++ (339TH/s) can still be the better fit when budget, availability, or a specific mining setup matters more.
Profit estimates use currently available product data and a hosted electricity rate of $0.060/kWh.
Technical comparison
Side-by-side mining, operating, and commercial specs.
| Feature | WhatsMiner M66S++ (339TH/s) | Antminer S3 (478GH/s) | Advantage |
|---|---|---|---|
| Brand | WhatsMiner | Antminer | Contextual |
| Model | M66 | S3 | Contextual |
| Hashrate | 339 TH/s Best | 478 GH/s | WhatsMiner M66S++ (339TH/s) |
| Power Consumption | 5518W | 366W Best | Antminer S3 (478GH/s) |
| Efficiency | 16.28 J/TH | 0.77 J/GH Best | Antminer S3 (478GH/s) |
| Daily energy use | 132.4 kWh | 8.8 kWh Best | Antminer S3 (478GH/s) |
| Net Daily Profit (Est.) | $4.17 Best | -$0.51 | WhatsMiner M66S++ (339TH/s) |
| Monthly Profit (Est.) | $125.22 Best | -$15.21 | WhatsMiner M66S++ (339TH/s) |
| Price | $2,654.68 | N/A | Contextual |
| Estimated ROI | 21 mo | N/A | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 267 x 401 x 147 mm | 137 x 331 x 160 mm | Contextual |
| Weight | 18000 g | 17000 g Best | Antminer S3 (478GH/s) |
Performance
WhatsMiner M66S++ (339TH/s) has the hashrate edge for raw output potential.
Efficiency
Antminer S3 (478GH/s) is stronger when comparing joules per hash unit.
Buying decision
Check live stock, delivery schedule, and hosting capacity on the product page before placing an order.
Frequently asked questions
Which is more powerful: WhatsMiner M66S++ (339TH/s) or Antminer S3 (478GH/s)?
WhatsMiner M66S++ (339TH/s) has a higher hashrate of 339 TH/s compared to Antminer S3 (478GH/s)'s 478 GH/s.
Is WhatsMiner M66S++ (339TH/s) more efficient than Antminer S3 (478GH/s)?
Antminer S3 (478GH/s) is more energy efficient at 0.77 J/GH.
Which miner has the better estimated ROI?
Estimated ROI is not available because one of the miners is missing current pricing or profit data.
Every Day You Wait is Revenue You Lose
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