Antminer S21 Pro (234TH/s) vs WhatsMiner M66S+ (318TH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
Antminer S21 Pro (234TH/s)
Option 2
WhatsMiner M66S+ (318TH/s)
Antminer S21 Pro (234TH/s) leads this comparison
Antminer S21 Pro (234TH/s) comes out ahead on more buyer-facing signals here. WhatsMiner M66S+ (318TH/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 S21 Pro (234TH/s) | WhatsMiner M66S+ (318TH/s) | Advantage |
|---|---|---|---|
| Brand | Antminer | WhatsMiner | Contextual |
| Model | S21 | M66 | Contextual |
| Hashrate | 234 TH/s | 318 TH/s Best | WhatsMiner M66S+ (318TH/s) |
| Power Consumption | 3510W Best | 5406W | Antminer S21 Pro (234TH/s) |
| Efficiency | 15.00 J/TH Best | 17.00 J/TH | Antminer S21 Pro (234TH/s) |
| Daily energy use | 84.2 kWh Best | 129.7 kWh | Antminer S21 Pro (234TH/s) |
| Net Daily Profit (Est.) | $2.35 | $2.40 Best | WhatsMiner M66S+ (318TH/s) |
| Monthly Profit (Est.) | $70.37 | $71.86 Best | WhatsMiner M66S+ (318TH/s) |
| Price | $1,713.44 Best | $2,263.84 | Antminer S21 Pro (234TH/s) |
| Estimated ROI | 24 mo Best | 31 mo | Antminer S21 Pro (234TH/s) |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 400 x 290 x 195 mm | 267 x 401 x 147 mm | Contextual |
| Weight | N/A | 18000 g | Contextual |
Performance
WhatsMiner M66S+ (318TH/s) has the hashrate edge for raw output potential.
Efficiency
Antminer S21 Pro (234TH/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: Antminer S21 Pro (234TH/s) or WhatsMiner M66S+ (318TH/s)?
WhatsMiner M66S+ (318TH/s) has a higher hashrate of 318 TH/s compared to Antminer S21 Pro (234TH/s)'s 234 TH/s.
Is Antminer S21 Pro (234TH/s) more efficient than WhatsMiner M66S+ (318TH/s)?
Yes, Antminer S21 Pro (234TH/s) is more energy efficient at 15.00 J/TH.
Which miner has the better estimated ROI?
Antminer S21 Pro (234TH/s) has the stronger estimated payback period at 24 mo, based on current product pricing and $0.060/kWh hosted electricity.
Every Day You Wait is Revenue You Lose
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