There have been a large number of threads regarding CPU overclocking and damage to electrical components in the past. Mostly, however, these questions were directed at how increased voltage and the resulting heat can cause component failure and reduced lifetime, if not cooled properly.
Since FSB-overclocking to reach higher performance is not recommended today, if a free CPU-multiplier is available, because the resulting increase of the SATA-Bus clock rate can cause hard-drive issues and the actual memory clock is more difficult to control, I was wondering, if overclocking the CPU-multiplier could cause any similar issues.
Is there any logical scenario (or even research done) in which a CPU that was overclocked solely by increasing the multiplier could produce (silently) corrupted data? I'm not concerned with corrupt data because of a sudden thermal shutdown at an extreme overclock with insufficient cooling, but rather with the possibility of long-term silent data corruption of files on the drives or in the memory, because of unnoticed hardware malfunction, even when running the cpu slightly above specification. (E.g. a 10% multiplier increase without raising voltages, etc.)
Is this even a viable danger, given how CPU-multiplier overclocking works and are there any sources on this topic?
I noticed that it is difficult to find sound information on the potential effects of hardware overclocking, besides of subjective opinions and recommendations. ("I wouldn't run hardware outside of manufacturer specifications, if reliability is demanded", etc.)