Antminer S3 (478GH/s) vs Whatsminer M21 (31MH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
Antminer S3 (478GH/s)
Option 2
Whatsminer M21 (31MH/s)
Whatsminer M21 (31MH/s) leads this comparison
Whatsminer M21 (31MH/s) comes out ahead on more buyer-facing signals here. Antminer S3 (478GH/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 | Antminer S3 (478GH/s) | Whatsminer M21 (31MH/s) | Advantage |
|---|---|---|---|
| Brand | Antminer | N/A | Contextual |
| Model | S3 | N/A | Contextual |
| Hashrate | 478 GH/s Best | 31 MH/s | Antminer S3 (478GH/s) |
| Power Consumption | 366W | 0W Best | Whatsminer M21 (31MH/s) |
| Efficiency | 0.77 J/GH | N/A | Contextual |
| Daily energy use | 8.8 kWh | 0.0 kWh Best | Whatsminer M21 (31MH/s) |
| Net Daily Profit (Est.) | -$0.51 | $1.11 Best | Whatsminer M21 (31MH/s) |
| Monthly Profit (Est.) | -$15.21 | $33.15 Best | Whatsminer M21 (31MH/s) |
| Price | N/A | N/A | Contextual |
| Estimated ROI | N/A | N/A | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 137 x 331 x 160 mm | 200 x 440 x 300 mm | Contextual |
| Weight | 17000 g | 7150 g Best | Whatsminer M21 (31MH/s) |
Performance
Antminer S3 (478GH/s) has the hashrate edge for raw output potential.
Efficiency
Efficiency data is not available for this comparison.
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: Antminer S3 (478GH/s) or Whatsminer M21 (31MH/s)?
Antminer S3 (478GH/s) has a higher hashrate of 478 GH/s compared to Whatsminer M21 (31MH/s)'s 31 MH/s.
Is Antminer S3 (478GH/s) more efficient than Whatsminer M21 (31MH/s)?
Efficiency data is not available for this comparison.
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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