Bitmain Antminer S21 XP Hyd vs Bitaxe Gamma 601
- Comparing
- two miners
- Decided by
- Efficiency (J/TH, lower is better)
- Last reviewed
- 2026-08-18
A 473 TH/s hydro miner that demands plumbing, a dry cooler, and a 240V circuit before it earns a single satoshi.
The open-source lottery ticket of Bitcoin mining: 1.2 TH/s at 18 W, built by a community that publishes its schematics.
Verdict: Bitmain Antminer S21 XP Hyd
Bitmain Antminer S21 XP Hyd is the more efficient machine: 12.0 J/TH against 15.0 J/TH for Bitaxe Gamma 601, on the rated watts and nominal hashrate each maker publishes.
- Criterion
- Efficiency (J/TH, lower is better)
- Bitmain Antminer S21 XP Hyd
- 12.0 J/TH
- Bitaxe Gamma 601
- 15.0 J/TH
Bitmain Antminer S21 XP Hyd and Bitaxe Gamma 601, 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 | Bitmain Antminer S21 XP Hyd | Bitaxe Gamma 601 |
|---|---|---|
| Efficiency | 12.0 J/TH (favoured on this row) | 15.0 J/TH |
| Editorial rating | 4.1 | 4.0 |
| Hashrate | 473 TH/s | 1.2 TH/s |
| Power draw | 5,676 W | 18 W |
| Street price | $7,700 to $11,000 | $150 to $250 |
| Price per TH/s (midpoint) | $19.77 (favoured on this row) | $166.67 |
| Cooling | Hydro (liquid loop) | Passive / small fan |
| Noise | Low, pump and water loop only | Under 30 dB |
| Released | October 2024 | 2024 |
| Made by | Bitmain | Bitaxe (open source) |
| Best for | Serious and professional miners with water-cooling infrastructure already in place | Open-source enthusiasts and solo-mining hobbyists who value learning over returns |
| Last reviewed | 2026-08-18 | 2026-08-18 |
Frequently asked questions
Is Bitmain Antminer S21 XP Hyd or Bitaxe Gamma 601 more efficient?
Bitmain Antminer S21 XP Hyd is the more efficient machine: 12.0 J/TH against 15.0 J/TH for Bitaxe Gamma 601, 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, Bitmain Antminer S21 XP Hyd or Bitaxe Gamma 601?
Bitmain Antminer S21 XP Hyd, at $19.77 per TH/s against $166.67, on the midpoint of each street-price band (Bitmain Antminer S21 XP Hyd $7,700 to $11,000, Bitaxe Gamma 601 $150 to $250) as of the review dates. A cheaper terahash that burns more power costs more over a year at most electricity prices.
Which is quieter, Bitmain Antminer S21 XP Hyd or Bitaxe Gamma 601?
Bitmain Antminer S21 XP Hyd: Low, pump and water loop only, hydro (liquid loop) cooling. Bitaxe Gamma 601: Under 30 dB, passive / small fan cooling. Neither belongs in a room people use; the mining hub covers where each can actually run.
Which is newer, Bitmain Antminer S21 XP Hyd or Bitaxe Gamma 601?
Both were released in 2024 (Bitmain Antminer S21 XP Hyd in October 2024, Bitaxe Gamma 601 in 2024).
The full reviews: Bitmain Antminer S21 XP Hyd and Bitaxe Gamma 601, each with its sources, and every miner we review.
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