[wnevets]

Are the CPUs that received elevated operating voltage permanently damaged?

[Pet_Ant]

This is the most pressing question. If it was just a microcode issue a cooloff and power cycle ought to at least reset things but according to Wendel from Level 1 Tech, that doesn't seem to always be the case.

[kevingadd]

The problem is that running at too high of a voltage for sustained periods can cause physical degradation of the chip in some cases. Hopefully not here!

[chmod775]

> can cause physical degradation of the chip in some cases.

Not in some cases. Chips always physically degrade regardless of voltage. Higher voltages will make it happen faster.

[account42]

Yes, but usually this happens slowly enough that the chip will be long obsolete before the degredation becomes an issue.

[Pet_Ant]

Why do chis degrade? Is this due to the whiskers I’ve heard about?

[cesarb]

> Why do chis degrade? Is this due to the whiskers I’ve heard about?

No, tin whiskers are a separate issue, which happens mostly outside the chips. The keyword you're looking for is electromigration (https://en.wikipedia.org/wiki/Electromigration).

[layer8]

Not instantly it seems, but there have been reports of degradation over time. It will be a case-by-case thing.

[userbinator]

Possible electromigration damage, yes.