it reduces stability regardless, how much stability you need is an entirely different question, 99% of people won't need more than 24H's which is when they turn off/restart the PC for the night or beginning of day, at which point all stuck transistors reset due to the voltage flush and initial renewal at system restart. If enough transistors are stuck in a 0 or 1 position then you guessed it: BSOD ("blue screen of death") or a crash if you prefer. Intel's base line for consumer chips is 3 weeks full stress test load (Xeons have a 3 month rule) in both cases unless your mining or doing an incredibly complex and long render with your cpu its basically infinite stability for the normal user, add on top of that 50mv's extra for quality and stability assurance during the 3 year warranty period (to account for silicon degradation) and you realize you can shave off A LOT of voltage off the base or inversely you can add a lot of speed (mhz) with base voltage. Typically you can reduce from 50 to 150mv's off base core voltage, 50 to 100mv's off IO and SA voltage and 50mv's off cache ratio voltage. Take the problem upside down and you can lock the multiplier easily on a K chip to maximum boost across all cores, increase cache ratio by a good 400-700mhz and OC ram at stock voltage to 3000-3200mhz. All this is dependent on silicon hence why we have a range of what is possible. At this point it must be obvious but i will mention it anyway you can also increase stability by DECREASING clocks, as you will have the same voltage for an easier operation speed. Reminder: All this is based off a tipical user that will restart the PC every 24-48h's, if you need more stability than this then my numbers are off, adjust accordingly to your needs and your silicon. Hope this clears up these concepts for somebody. Happy tweaking.