Bitaxe Gamma 601 vs MicroBT Whatsminer M66S+
- Comparing
- two miners
- Decided by
- Efficiency (J/TH, lower is better)
- Last reviewed
- 2026-08-18
The open-source lottery ticket of Bitcoin mining: 1.2 TH/s at 18 W, built by a community that publishes its schematics.
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: Bitaxe Gamma 601
Bitaxe Gamma 601 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)
- Bitaxe Gamma 601
- 15.0 J/TH
- MicroBT Whatsminer M66S+
- 16.5 J/TH
Bitaxe Gamma 601 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 | Bitaxe Gamma 601 | MicroBT Whatsminer M66S+ |
|---|---|---|
| Efficiency | 15.0 J/TH (favoured on this row) | 16.5 J/TH |
| Editorial rating | 4.0 | 3.5 |
| Hashrate | 1.2 TH/s | 318 TH/s |
| Power draw | 18 W | 5,247 W |
| Street price | $150 to $250 | $8,000 to $10,500 |
| Price per TH/s (midpoint) | $166.67 | $29.09 (favoured on this row) |
| Cooling | Passive / small fan | Hydro (liquid loop) |
| Noise | Under 30 dB | Low, water loop only |
| Released | 2024 | 2025 |
| Made by | Bitaxe (open source) | MicroBT |
| Best for | Open-source enthusiasts and solo-mining hobbyists who value learning over returns | Farms that want a hydro Bitmain alternative on standard 100-240V power |
| Last reviewed | 2026-08-18 | 2026-08-18 |
Frequently asked questions
Is Bitaxe Gamma 601 or MicroBT Whatsminer M66S+ more efficient?
Bitaxe Gamma 601 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, Bitaxe Gamma 601 or MicroBT Whatsminer M66S+?
MicroBT Whatsminer M66S+, at $29.09 per TH/s against $166.67, on the midpoint of each street-price band (Bitaxe Gamma 601 $150 to $250, 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, Bitaxe Gamma 601 or MicroBT Whatsminer M66S+?
Bitaxe Gamma 601: Under 30 dB, passive / small fan 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, Bitaxe Gamma 601 or MicroBT Whatsminer M66S+?
MicroBT Whatsminer M66S+, released 2025, against 2024 for Bitaxe Gamma 601.
The full reviews: Bitaxe Gamma 601 and MicroBT Whatsminer M66S+, each with its sources, and every miner we review.
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