5 nanometers good.
Compared with 5 nm, the performance of 3 nm process may be improved by only 10%-15%, and the power consumption is reduced by 25%-30%, and these improvements are relative to these improvements or relative to the original 5 nm (N5), if it is compared with the subsequent process improvement version (N5P), the 3 nm improvement will be smaller, these are still theoretical values, specific to the actual product. It may not be possible to achieve such a performance improvement, and whether more advanced processes can bring a large performance improvement is a big question.