What are some of the dangers of voltage tweaking GPUs?

[finnthecelt]

Take al look at this: http://en.wikipedia.org/wiki/Electromigration

And what exactly are we looking at there?

Did you read it? Overvolting will degrade the components of the circuitry over time. Makes sense.

Interesting link, thx.

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[nebiki]

.... with a 5850. Using GPU-Z, it reached 145C for VRMs although GPU is like 48-50C.

Where do you see the temperature of the VRMs in GPU-Z?
I have a Sapphire 5830 Xtreme 1G, is it maybe GPU-Temp. #2??

VReg for vrms. probably no sensor there on your card. my gtx460 has only 1 sensor, which is the gpu temp.

[klaaster]

Ok, thanks.
Wow this 6900 must be cooled by water or dipped in some freezing liquid.