AMD says overclocking blows a hidden fuse on Ryzen Threadripper 7000 to show if you’ve overclocked the chip, but it doesn’t automatically void your CPU’s warranty::AMD explains the hidden fuses behind Ryzen Threadripper 7000 processors and how it will handle warranty claims.
Dunno whether it’s uniform all over the EU but in Germany the burden of proof shifts from the manufacturer to the consumer a year after sale, that is, if you want to rely on AMD having to prove that it was the overclock you better break the thing fast.