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At what voltage consider to be dangerous?

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Gxp

Registered
Joined
Feb 13, 2001
Beside from raising too much heat, is there other risk for too high voltage that can damage the CPU? And also what's the highest voltage that would be safe for the 1.2tbird on abitkt7a-raid mobo?
 

dgk

Member
Joined
Feb 2, 2001
Location
Delray Beach FL
No one answered? How high will the board let you set it? I think the only damage from high voltage is heat but I'm no expert here. I just posted a question about my A7V running a core voltage of (according to MBM) 1.89 although the jumper is set for 1.80.

The highest the A7V goes without modification is 1.85 but I think the Abit goes higher.
 

Hinge

Registered
Joined
Mar 1, 2001
The AMD spec for ABSOLUTE MAX CONDITIONS is "max OPERATING voltage + 0.5V" which is the same as 1.85V +0.5V = 2.35V. For overclocking, if you can handle the resulting heat, I wouldn't go any higher than half the 0.5V adder or 2.10V .

I have a 1.1GHz TBird but plan to try lower Vcore for overclocking 1st since some have made it work and it will also help keep temps down since power formula is c*(V*V)*f where c is a constant, V = voltage, and f = freq. Since V is a squared function, going from 1.85V to 1.65V saves 20% in power (heat)!

Hinge out



Hinge out
 

Yomama

Senior Member
Joined
Dec 18, 2000
Location
The battle born State
In additon to heat, and to blowing up the chip by using really high voltages (e.g. 2.5 or more) there is a danger that's called "Electromigration", which ultimately can wear out certain areas on the chip and thus reduce lifetime. Not too much to worry though, since the chips will run for at least 10 years under normal conditions Electromigration may reduce it to 5, which still is ages in the context of this hobby (I think the fastes processor 5 years ago was a P1 233 or so...)
 
OP
G

Gxp

Registered
Joined
Feb 13, 2001
YO, what tbird was it that you o/c, 1.2 gz?