Since its N3 technology is in its early stages of development, TSMC doesn't currently talk about the specific characteristics of the process nor its advantages over N5. TSMC said that it had evaluated all possible transistor structure options for 3nm and came out with ‘a very good solution’ for its clients. The specification is under development and the company is confident it would meet requirements of its leading partnering customer.TSMC's 3nm process is expected to be ready for mass production in 2022. The foundry expects its 5nm node will be ready next year.
Via: AnandTech