The Antminer S21 from Bitmain marks a notable leap forward in Bitcoin mining technology, prioritizing both efficiency and performance. With a hash rate of up to 200 TH/s and an energy efficiency rating of 17.5 J/T, the Antminer S21 demonstrates significant advancements. Developed in partnership with TSMC and featuring cutting-edge 5-nm chips, this model boasts up to a 40 % improvement in efficiency over its predecessors, the S19 series. This exemplifies Bitmain's ongoing commitment to refining mining hardware for superior performance and lower power consumption.