WhatsMiner M66 (280MH/s) vs L21 (550MH/s)
Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.
Option 1
WhatsMiner M66 (280MH/s)
Option 2
L21 (550MH/s)
WhatsMiner M66 (280MH/s) leads this comparison
WhatsMiner M66 (280MH/s) comes out ahead on more buyer-facing signals here. L21 (550MH/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 M66 (280MH/s) | L21 (550MH/s) | Advantage |
|---|---|---|---|
| Brand | N/A | BW | Contextual |
| Model | N/A | L | Contextual |
| Hashrate | 280 MH/s | 550 MH/s Best | L21 (550MH/s) |
| Power Consumption | 0W Best | 950W | WhatsMiner M66 (280MH/s) |
| Efficiency | N/A | 1.73 J/MH | Contextual |
| Daily energy use | 0.0 kWh Best | 22.8 kWh | WhatsMiner M66 (280MH/s) |
| Net Daily Profit (Est.) | $0.00 Best | -$1.16 | WhatsMiner M66 (280MH/s) |
| Monthly Profit (Est.) | $0.00 Best | -$34.74 | WhatsMiner M66 (280MH/s) |
| Price | N/A | N/A | Contextual |
| Estimated ROI | N/A | N/A | Contextual |
| Cooling | AIR | AIR | Contextual |
| Dimensions | 267 x 401 x 147 mm | 130 x 350 x 155 mm | Contextual |
| Weight | 16000 g | 5750 g Best | L21 (550MH/s) |
Performance
L21 (550MH/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: WhatsMiner M66 (280MH/s) or L21 (550MH/s)?
L21 (550MH/s) has a higher hashrate of 550 MH/s compared to WhatsMiner M66 (280MH/s)'s 280 MH/s.
Is WhatsMiner M66 (280MH/s) more efficient than L21 (550MH/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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