Nanometers is a marketing term now, just like frequency used to be a marketing term when talking about CPUs. In reality, size of various features in a CPU diff

Nanometers is a marketing term now, just like frequency used to be a marketing term when talking about CPUs. In reality, size of various features in a CPU differ widely. Intel 10nm could have a transistor gate pitch of 50nm, while TSMC 7nm could have a pitch of 60nm. All the meaningful parts you care about, like size of the transistor components and interconnects, are _not_ small, and it every company designs their own tweaks on these building blocks for reliability/manufacturability/performance/power/etc.