i5 6600K Safe Voltage
i5 6600K Safe Voltage
The maximum voltage suggested for long-term operation is 1.30-1.35V, which is safe. Exceeding this can cause your CPU's transistors to deteriorate over time. Faster degradation occurs even without reaching that level, but higher voltages speed up the process.
I wouldn't either, though many people run them at 1.4v to 1.45v as long as the cooling is sufficient. Intel also mentions a maximum voltage of 1.52v for Skylake, and I don't think they'd say that if the chip couldn't handle it reliably for at least three years (the warranty covers that). Still, I agree I wouldn't attempt running it at 1.5v, but all these claims about 1.3v to 135v seem unreasonable to me.