28.6 percent improvement, 30J/TH, 7nm, antminers, BCH, Bitcoin, Bitcoin Cash, Bitcoin Core, Bitmain, Bitmain Technologies, BM1391, BM1397, BTC, Chip Sets, Cryptocurrency, Digital assets, efficiency, foundries, Mining, mining rigs, N-Featured, Next Gen Chips, Semiconductor, TSMC Bitmain Announces New 7nm Bitcoin Mining Chip With 29% More Efficiency Ayush SaraswatFebruary 18, 2019, 11:54 pmFebruary 18, 2019 193