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HD7950 small voltage increase cause flicker

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  • Graphics Cards
  • Sapphire
  • Overclocking
Last response: in Overclocking
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a c 172 U Graphics card
a c 137 K Overclocking
February 19, 2013 8:31:05 PM

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.

More about : hd7950 small voltage increase flicker

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a c 126 U Graphics card
a c 126 K Overclocking
February 20, 2013 8:13:04 AM

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?
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a c 172 U Graphics card
a c 137 K Overclocking
February 20, 2013 10:33:45 AM

Rustyy117 said:
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?
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a c 126 U Graphics card
a c 126 K Overclocking
February 20, 2013 11:05:15 AM

Novuake said:
I thought Trixx could not increase voltage?


I haven't tried it with my HD7950 but I thought it did allow voltage adjustment.
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a c 172 U Graphics card
a c 137 K Overclocking
February 20, 2013 12:58:00 PM

Lets give it a try then... Thanks. Will let you know in a few minutes...
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February 20, 2013 1:04:40 PM

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).
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a c 172 U Graphics card
a c 137 K Overclocking
February 20, 2013 1:27:59 PM

Well would you look at that... It works! Thanks man!
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a c 172 U Graphics card
a c 137 K Overclocking
February 20, 2013 1:29:05 PM

Fokissed said:
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.
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a c 172 U Graphics card
a c 137 K Overclocking
February 20, 2013 1:29:25 PM

Best answer selected by Novuake.
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a c 126 U Graphics card
a c 126 K Overclocking
February 20, 2013 1:38:39 PM

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


Cool, glad it worked, now I have to do it :D 
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a c 172 U Graphics card
a c 137 K Overclocking
February 20, 2013 1:45:49 PM

Rustyy117 said:
Cool, glad it worked, now I have to do it :D 


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

NICE!
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a c 126 U Graphics card
a c 126 K Overclocking
February 20, 2013 1:48:23 PM

Novuake said:
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.
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a c 172 U Graphics card
a c 137 K Overclocking
February 20, 2013 1:56:25 PM

Rustyy117 said:
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...
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