[chasil]

It is well-known that planar transistors are more reliable than FINFET.

It is usually agreed that the end of planar transistors was the last process node of 28 nanometers. Everything below this (14, 10, 7, 5, 3, and 2 nanometers so far) is less reliable.

The fastest, lowest power, and most reliable CPU in a laptop will be on a 28nm process node. Everything beyond this sacrifices reliability for speed and lower power.

(And if you really care about lower power, then you are on ARM.)

[tengbretson]

The failure rate of CPUs could go up 10x and it would still be a rounding error when quantifying what causes laptops to be decommissioned.

[chasil]

A quick check of Google shows that TSMC does have a 16nm finfet process that is tested and approved for use in automobiles, which is a much more punishing environment than laptops or phones.

As a measure of redundancy, multiple finfet transistors can be wired together to act as one. It would not surprise me if this was heavily exploited in automobile applications.

https://electronics360.globalspec.com/article/16795/2-automo...