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> But we're yet to see overclocking enthusiasts run into these reliability concerns

Isn’t that also because said enthusiasts tend to use massive coolers and monitor temperatures to keep their cpus as cool as possible?

I know that I for one would never let a cpu on my desktop get over 80 degrees, but it’s common for laptops to go to 100.

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Probably. From a follow on article,

"The biggest factor is heat. “Higher speeds tends to produce higher temperatures and temperature is the biggest killer,” says Rita Horner, senior product marketing manager for 3D-IC at Synopsys. “Temperature exacerbates electron migration. The expected life can exponentially change from a tiny delta in temperature.”"

https://semiengineering.com/aging-problems-at-5nm-and-below/

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