Canaan Avalon A15 Pro vs MicroBT Whatsminer M66S+
- Comparing
- two miners
- Decided by
- Efficiency (J/TH, lower is better)
- Last reviewed
- 2026-08-18
Canaan's answer to the Antminer S21 Pro: the same 15.0 J/TH efficiency at 221 TH/s, usually a few hundred dollars cheaper.
A water-cooled workhorse for the farm hedging against Bitmain: 318 TH/s at 16.5 J/TH on universal 100-240V input, with no three-phase upgrade required.
Verdict: Canaan Avalon A15 Pro
Canaan Avalon A15 Pro is the more efficient machine: 15.0 J/TH against 16.5 J/TH for MicroBT Whatsminer M66S+, on the rated watts and nominal hashrate each maker publishes.
- Criterion
- Efficiency (J/TH, lower is better)
- Canaan Avalon A15 Pro
- 15.0 J/TH
- MicroBT Whatsminer M66S+
- 16.5 J/TH
Canaan Avalon A15 Pro and MicroBT Whatsminer M66S+, fact by fact
Every row is from the two reviews as of their review dates, with sources on each. A check marks the side a decidable criterion favours; rows without one are information, not a score.
| Fact | Canaan Avalon A15 Pro | MicroBT Whatsminer M66S+ |
|---|---|---|
| Efficiency | 15.0 J/TH (favoured on this row) | 16.5 J/TH |
| Editorial rating | 3.9 | 3.5 |
| Hashrate | 221 TH/s | 318 TH/s |
| Power draw | 3,315 W | 5,247 W |
| Street price | $3,500 to $4,800 | $8,000 to $10,500 |
| Price per TH/s (midpoint) | $18.78 (favoured on this row) | $29.09 |
| Cooling | Air | Hydro (liquid loop) |
| Noise | 75 dB | Low, water loop only |
| Released | 2025 | 2025 |
| Made by | Canaan | MicroBT |
| Best for | Buyers who want a third major manufacturer with competitive specs at a fair price | Farms that want a hydro Bitmain alternative on standard 100-240V power |
| Last reviewed | 2026-08-18 | 2026-08-18 |
Frequently asked questions
Is Canaan Avalon A15 Pro or MicroBT Whatsminer M66S+ more efficient?
Canaan Avalon A15 Pro is the more efficient machine: 15.0 J/TH against 16.5 J/TH for MicroBT Whatsminer M66S+, on the rated watts and nominal hashrate each maker publishes. Efficiency is derived from the record's rated watts and nominal hashrate and never stored, so it cannot disagree with the numbers beside it.
Which is better value, Canaan Avalon A15 Pro or MicroBT Whatsminer M66S+?
Canaan Avalon A15 Pro, at $18.78 per TH/s against $29.09, on the midpoint of each street-price band (Canaan Avalon A15 Pro $3,500 to $4,800, MicroBT Whatsminer M66S+ $8,000 to $10,500) as of the review dates. A cheaper terahash that burns more power costs more over a year at most electricity prices.
Which is quieter, Canaan Avalon A15 Pro or MicroBT Whatsminer M66S+?
Canaan Avalon A15 Pro: 75 dB, air cooling. MicroBT Whatsminer M66S+: Low, water loop only, hydro (liquid loop) cooling. Neither belongs in a room people use; the mining hub covers where each can actually run.
Which is newer, Canaan Avalon A15 Pro or MicroBT Whatsminer M66S+?
Both were released in 2025 (Canaan Avalon A15 Pro in 2025, MicroBT Whatsminer M66S+ in 2025).
The full reviews: Canaan Avalon A15 Pro and MicroBT Whatsminer M66S+, each with its sources, and every miner we review.
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