Many companies (including NVidia and AMD) are adopting chiplet designs for which different parts of the chip can be manufactured on different process nodes. The

Many companies (including NVidia and AMD) are adopting chiplet designs for which different parts of the chip can be manufactured on different process nodes. The most performance critical aspects of chips will be manufactured on 3 nm nodes, but most of the chip will be manufactured on 4-10 nm nodes. It's too expensive (in cost/wafer) to use 3 nm for everything.