overvolting graphics card

walkertippett12 · Mar 10, 2014

I Have recently built my computer and overclocked the gtx 780 classified with an unofficial overvolting software and it all went good , now i am trying to do the same to my brothers computer with the same card and as soon as i bring it over 1.2 volts "what precision x can give me" it starts screen tearing and graphical errors all i did was increase voltage not the clock then when i turn it back down it runs normal is there any setting or thing that i can try to make it so it wont do this.

IRyannHD · Mar 10, 2014

Does he have the exact same GPU, like same brand etc and does he have the same specs.

doubletake · Mar 10, 2014

Not all GPUs are equal, you cannot ever realistically expect to get the same results out of different GPUs. You clearly got a better card that can run at over 1.2v on air, but maybe your brother's isn't as capable. Tbh, I wouldn't run an air cooled 780 at over 1.2v since anything higher than that and VRM cooling can become an issue. If his card can't reliably hit OCs with that high a voltage, his chip is just inferior and will probably require significantly better cooling to have any chance of running stable.

IRyannHD · Mar 10, 2014

doubletake :

Actually GPUs can be the same if you buy the exact brand model.

walkertippett12 · Mar 10, 2014

IRyannHD :

walkertippett12 · Mar 10, 2014

Yes the same card and everything i just made a clone of my computer

RobCrezz · Mar 10, 2014

IRyannHD :

Nope, its the silicon lottery, some GPUs are just more capable than others.

You can have two identical cards same GPU etc, but one might overclock by 15% fine and the other you might not even get 5%.

IRyannHD · Mar 10, 2014

RobCrezz :

IRyannHD :

Nope, its the silicon lottery, some GPUs are just more capable than others.

You can have two identical cards same GPU etc, but one might overclock by 15% fine and the other you might not even get 5%.

I suppose but they should be able to OC almost close to each other with similar performance.

RobCrezz · Mar 10, 2014

IRyannHD :

"should" being the key word, but in reality it doesn't work like that.

Check out this video. The OC Windforce version couldn't get close to the reference, which just happens to be a better chip, when usually non reference cards get the better chips. Its the same with CPUs, some overclock great, some dont (of the same type), thats the silicon lottery:

https://www.youtube.com/watch?v=9B8st31VV7I

IRyannHD · Mar 10, 2014

RobCrezz :

IRyannHD :

"should" being the key word, but in reality it doesn't work like that.

Check out this video. The OC Windforce version couldn't get close to the reference, which just happens to be a better chip, when usually non reference cards get the better chips. Its the same with CPUs, some overclock great, some dont (of the same type), thats the silicon lottery:

https://www.youtube.com/watch?v=9B8st31VV7I

Yeah I know

doubletake · Mar 10, 2014

If you know then don't make misleading statements to people looking for actual help :|

IRyannHD · Mar 12, 2014

doubletake :

I meant I know about non-reference cards having better chips.

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