Those were great space heaters! Mine tried to catch fire at least once and my motherboard model at the time was known for catching fire! lolOK, I will bow to your knowledge. Maybe those old 32 ghz, Hypo-Threading Pentiums weren't all that bad. I have a few sitting around waiting for a home. You can tell that I don't know anything about this...
Heat management helps. I broke another motherboard pushing an AMD FX8350 to 4.5ghz. The CPU had no issue with it, it'd easily go higher but it just wanted way too much power. I don't know exactly what failed in the Voltage Regulator Module but it stained the board when it went. My current i5 6600k is at 4.6ghz and has been happily whirring along for years as this was one of the last CPUs Intel cared about keeping temps and power draw under control. (I like to think I have a little knowledge on CPUs, as I seem to know enough to realize there's far more to them than I could ever understand.)