Overvolting hurt more than high temps?

[computergeek22]

I heard somewhere that overvolting hurt CPU's more than high temps. Is this true? If so why? Also what would be a safe voltage for an opteron 148/146 and a athlon 64 3700+?

 

[Mogadon]

Voltage will kill your CPU just as easily as high temps. If you can keep the temperatures under control but run a ridiculoously high voltage you can kill the CPU.

Why? - Someone with more knowledge than me can answer this one with all the details.

On air - 1.55V is considered a safe voltage for the A64's, you will also find people that run their CPU's at 1.6 / 1.65V without problems, it's up to you if you want to go this high.

 

[klocwerk]

equally dangerous, but it will fry it quicker. If your mobo has no overvoltage protection, you don't get the nice "overheated shutdown", you just get ZAP! Dead cpu.

1.55V is as high as you need to go on the a64s. That's the sweet-spot for OCing, 1.5-1.55
No idea for the Opteron's, sorry.

 

[Unkno]

what about for X2 cores? How high should the voltage be?