Why is my stock voltage so high? HD7970 help

Tjorhunter · Dec 13, 2013

Hey, I've been overclocking my MSI twin frozr III 7970 quite alot lately and have been getting pretty decent results.

My problem is that the card is running quite hot. And I've only just discovered that no matter what I did to the Core voltage, it wouldn't change in Afterburner. This meant that my Core voltage has been a ridiculous 1.256v.

Since discovering this I've tried lowing the voltage to 1.2v, but it has trouble even running stock (1050/1375) at this voltage, it constantly stutters in Unigine heaven.

Is it possible that I might have a faulty card that the manufacturers ramped up the voltage on so it can run, and hoped that the user wouldn't change any settings?

Cheers

Ironsounds · Dec 13, 2013

Hello... I don't believe you have a CUSTOM modded card, each card will have the same Bios installed from MSI... Not all GPU's will run exactly the same OC, but there can be a Big difference with how good they applied the thermal grease and the Fan/heatsink contact.

Unolocogringo · Dec 13, 2013

Every piece of silicone is slightly different.
Your pre overclocked card has a higher voltage than reference cards. It will probably run a 1.2 @1000 or gigahertz edition speed or 925 reference model speed.

doubletake · Dec 13, 2013

Tjorhunter :

It's certainly plausible; there was that controversy a while back where MSI was accused of pushing out nvidia cards with significantly higher stock voltages so that they could reach higher clocks and therefore appear to be faster than the competition. Who knows?

Tjorhunter · Dec 13, 2013

I think I'm able to run it a 1200/1600 at 1.210v pretty fine now, A quick restart of my PC seemed to fix the stuttering in Unigine heaven.

But there's one thing I'm a little concerned about. I keep hearing sounds from within my case that has only started happening since changing the Core voltage of my graphics card. It's like a clunky sound of something moving. It kinda sounds like the sound an electrical switchgear makes when it's turned on, but much quieter obviously.

What could this sound be? Is it anything to be worried about?

Cheers

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Why is my stock voltage so high? HD7970 help

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