There is no fix for Intel’s crashing 13th and 14th Gen CPUs — any damage is permanent
We got some answers from Intel, and more are on the way.
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If your CPU is crashing/unstable then yes, damage is already done, but for the few of us who bought these later just update your bios to the latest one, set intel defaults, do not overclock (I have even undervolted it a bit, but ymmv) and wait for the microcode update.
Though I do wonder if Intel isn't just stalling for time, I do hope they are not. Didn't wanna touch my build for next ~5 years.
That is, disappointingly, not sufficient to guarantee avoiding damage. I set all that in the BIOS using my first processor (13900KF) before ever inserting my replacement processor (14900KF) into the motherboard. The replacement processor still destroyed itself.
Processor 1 used only motherboard defaults and managed to destroy itself.
Processor 2 used only Intel recommended settings, no XMP memory profile, no Intel turbo boost, more conservative than motherboard defaults, and also destroyed itself.
I did not try running a processor for its lifetime at minimum memory speed or with only 1 core active. It's possible that that might be sufficient to avoid damage. If I hadn't already gone AMD over this, and had to use a processor from the affected generations, that's what I'd be doing now until Intel comes out with their update. Not gonna do much by way of fancy gaming, but at least the system's usable and hopefully won't destroy itself.
Rather get Ryzen and not deal with this.
There is also a corrosion issue. No software update will fix that. Intel purposely misled the media on that.