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Bitmain Antminer S21 XP vs Bitaxe Gamma 601

Comparing
two miners
Decided by
Efficiency (J/TH, lower is better)
Last reviewed
2026-08-18
Bitmain Antminer S21 XP4.4

Bitmain's most efficient air-cooled miner: 270 TH/s at 13.5 J/TH, about 10 percent less power per terahash than the next tier of fan-cooled rigs.

Bitaxe Gamma 6014.0

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

Bitmain Antminer S21 XP is the more efficient machine: 13.5 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
13.5 J/TH
Bitaxe Gamma 601
15.0 J/TH

Bitmain Antminer S21 XP 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.

Bitmain Antminer S21 XP and Bitaxe Gamma 601 compared fact by fact from their reviews; a check marks the side a decidable criterion favours.
FactBitmain Antminer S21 XPBitaxe Gamma 601
Efficiency13.5 J/TH (favoured on this row)15.0 J/TH
Editorial rating4.44.0
Hashrate270 TH/s1.2 TH/s
Power draw3,645 W18 W
Street price$3,800 to $5,500$150 to $250
Price per TH/s (midpoint)$17.22 (favoured on this row)$166.67
CoolingAirPassive / small fan
Noise75 dBUnder 30 dB
ReleasedOctober 20242024
Made byBitmainBitaxe (open source)
Best forHome and small operations that want flagship efficiency without running a water loopOpen-source enthusiasts and solo-mining hobbyists who value learning over returns
Last reviewed2026-08-182026-08-18

Frequently asked questions

Is Bitmain Antminer S21 XP or Bitaxe Gamma 601 more efficient?

Bitmain Antminer S21 XP is the more efficient machine: 13.5 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 or Bitaxe Gamma 601?

Bitmain Antminer S21 XP, at $17.22 per TH/s against $166.67, on the midpoint of each street-price band (Bitmain Antminer S21 XP $3,800 to $5,500, 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 or Bitaxe Gamma 601?

Bitmain Antminer S21 XP: 75 dB, air 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 or Bitaxe Gamma 601?

Both were released in 2024 (Bitmain Antminer S21 XP in October 2024, Bitaxe Gamma 601 in 2024).

The full reviews: Bitmain Antminer S21 XP and Bitaxe Gamma 601, each with its sources, and every miner we review.

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