Bitaxe Supra 401 (600GH/s +/-)Bitaxe Supra (401 build) A revved up version of the Bitaxe with the key difference being the ASIC used in the device. The Bitaxe Supra uses a BM1368PB AA chip, taken from the Antminer S21. The S21 chip boosts hashing performance of the Bitaxe to 600GH s (+ ) with a 14W power consumption (compared to the Ultra which is 500HG s + ). 32Bitcoins' Supras come with a standard PWM fan, but these can be replaced with the popular ice tower fan or other