A tech-fuelled rally in Asia, powered by the world's largest contract chipmaker TSMC has equities perking up, while Japan's sudden dip into recession put a question mark on the timing of the Bank of Japan's exit from ultra-loose policy. Also boosting sentiment in the tech space was Nvidia, surging past Google-parent Alphabet to become the third-most valuable U.S. company on Wednesday, after just overtaking Amazon ahead of the chipmaker's earnings next week. TSMC, which is a major Nvidia supplier, soared 8% to a new high and is on track to clock its biggest one-day percentage gain since November 2022.