HD7950 small voltage increase cause flicker

[Novuake]

HI guys.

OK just got my second HD7950 Sapphire Dual-X OC.

I have this strange issue though. My first one is OCd too 1180MHz with a slight voltage bump. Now I am trying to match these two cards up but for some reason even the smallest increase in voltage via MSI afterburner is causing a flicker on my screen even in Chrome. Now this is concerning, I have not attempted to game with a small voltage increase, do not wanna take the chance.

Anyone seen this before???

I have removed the first card and tried just the one to see if it has any effect, no difference...

Oh and my specs are in my signature. Crosair TX650 v2 PSU.

 

[Rustyy117]

Hi,

I get the same flicker with my HD7950 (MSI OC), if I change the frequency I get flickering in chrome, but also in other programs.
It's fine in games though.

Have you tried it with another overclocking utility like Sapphire Trixx?

 

[Novuake]

Hi,

I get the same flicker with my HD7950 (MSI OC), if I change the frequency I get flickering in chrome, but also in other programs.
It's fine in games though.

Have you tried it with another overclocking utility like Sapphire Trixx?

I thought Trixx could not increase voltage?

 

[Rustyy117]

I thought Trixx could not increase voltage?

I haven't tried it with my HD7950 but I thought it did allow voltage adjustment.

 

[Novuake]

Lets give it a try then... Thanks. Will let you know in a few minutes...

 

[Fokissed]

Possibly related: My HD5870 idles at 157/300MHz for core/mem with a single screen, and 400/900MHz with two screens. However, if overclocked, the card will idle at 157/300MHz with two screens and cause flickering. I also notice flickering when the clock speeds change (most likely memory).

 

[Novuake]

Well would you look at that... It works! Thanks man!

 

[Novuake]

Possibly related: My HD5870 idles at 157/300MHz for core/mem with a single screen, and 400/900MHz with two screens. However, if overclocked, the card will idle at 157/300MHz with two screens and cause flickering. I also notice flickering when the clock speeds change (most likely memory).

LOL try a different OC tool it seems.

 

[Novuake]

Best answer selected by Novuake.

 

[Rustyy117]

Well would you look at that... It works! Thanks man!

Cool, glad it worked, now I have to do it

 

[Novuake]

Cool, glad it worked, now I have to do it

Hahaha then do it... I matched them both to 1180MHz and 1350MHz memory. Voltage 1100mV.

NICE!

 

[Rustyy117]

Hahaha then do it... I matched them both to 1180MHz and 1350MHz memory. Voltage 1100mV.

NICE!

Yep. Will do later on today

Nice cards BTW... good clockers by the looks of it.

 

[Novuake]

Yep. Will do later on today

Nice cards BTW... good clockers by the looks of it.

Jip. 800MHz stock, 950MHz out of the factory and 1180MHz in my PC... LOL EPIC!!! GTX660ti my arse...