The BITMAIN ANTMINER S19J XP is a high-performance Bitcoin miner with a a hash rate of 151 TH/s and a power efficiency of 21.5 J/TH, making it one of the most efficient miners on the market. The S19J XP also has a power efficiency of 21.5 joules per terahash (J/TH), which is the best in the industry.