Although I don't know hardware, I read lots of stuff about developing it to get a better idea. Among the more interesting reads were slides about each process shrink along with challenges they brought. Especially from beginning of Deep Sub-Micron toward 28nm.
The impression I got, esp by 28nm, is the hardware is inherently broken in quite a few ways. They have to correct the masks with algorithms, they do image recognition on circuits to spot patterns that act up, extra latches, variance across the chip/wafer, aging effects... list goes on. Miracle they even work at all.
These things are also why I only trust old nodes for security. Sort of.
The impression I got, esp by 28nm, is the hardware is inherently broken in quite a few ways. They have to correct the masks with algorithms, they do image recognition on circuits to spot patterns that act up, extra latches, variance across the chip/wafer, aging effects... list goes on. Miracle they even work at all.
These things are also why I only trust old nodes for security. Sort of.