The Bitaxe Ultra, Supra, and Gamma represent three generations of open-source Bitcoin solo miners, each offering different trade-offs between hashrate, efficiency, and cost. The Ultra (BM1366 chip) is the entry-level model at ~500 GH/s, the Supra (BM1368) provides 40% more hashrate at similar efficiency, and the Gamma (BM1370) delivers the best value with 2.4x the Ultra’s hashrate at industry-leading efficiency. All three are designed
