T_M reporting screen corruption problems with Radeon HD 6970 under cold

Apparently, the HD 6970 is not doing all too well under cold. That's problem number two, after finding out there's hardly any software available to increase the clock frequencies to a decent level.

AMD, why?

Both Monteboy and I are suffering the same problems with 6970 cards subzero. For me, anything below 5C pot temp causes significant corruption to the point where the whole screen is fireworks. But it still benches and completes runs. In 2D the desktop is covered in small green dots. My card is modded with all the VRZone mods.

Can someone knowledgeable please hazard a guess as to the cause?

I have made a video showing Heaven DX11 running at temps from about -8C to +8C and you will see the corruptions suddenly disappearing around 5C


21

United Kingdom borandi says:

It looks like http://www.bit-tech.net/blog/2010/12/18/what-is-on-that-screen/ has come true.

Germany stummerwinter says:

:lol: Nice effects, looking like same problems with 4870X2 cards, only good for cold water...

Estonia G80 says:

4870X2 handled cold very well.

Germany stummerwinter says:

Mine not, all I tested couldn't run lower then 10°C...

Belgium Massman says:

If only they'd install Phenom II technology in the HD6000 series :D

says:

Tried to put only the core under cold water ? That could help to figure out the problem.

Australia Uncle Fester says:

I had no issues did quick test at minus 100 I was getting 1200mhz with 1.2v, im using the asus voltage tweak model so do not know if that has anything to do with it

Serbia monteboy says:

uncle fester said: I had no issues did quick test at minus 100 I was getting 1200mhz with 1.2v, im using the asus voltage tweak model so do not know if that has anything to do with it


Can you share the Bios of yuor Asus card ?

Thanks !

United States steponz says:

bummer.. I wonder if higher vmem or vcore helps at all?

United States steponz says:

bios.. seems like an idea..

Spain ese_xema says:

i´m agree with steponz try to increase the core voltage. it´s maybe your solution

FoX [OCXLAB.ES] says:

Nice xmas video :P

Finland SF3D says:

I would guess IMC issues. Did you try to lower the memory clocks and see if there is any difference? Did you try to increase memory voltage and what was the outcome? I hope this could be fixed with different bios. The card is doomed, if there is that bad cold bug on it.

Australia T_M says:

I tested with upto 1.45V vGPU and 1.7V vMEM, had no effect. UF send me that BIOS and i'll test it immediately

Australia T_M says:

Stummer, i had no issues running 4870x2 cold either (except killing one of them :P). I was really looking forward to this 6970 card after playing 6870 and 5870 with no CB

United States steponz says:

Any update?

Australia Uncle Fester says:

ill supply bios when i can, i am horribly sick in bed and feel like im dieing. as soon as i have the energy to boot my computer ill save the bios and forward it.

Estonia G80 says:

stummerwinter said: Mine not, all I tested couldn't run lower then 10°C...


I have seen two 4870X2 under LN2.
Both CB was around -100C. :P

Australia T_M says:

The asus BIOS does not resolve my problems under cold

Serbia monteboy says:

I can also confirm no change with Asus Bios ....

Romania Enz0 says:

Poparamiro discovered same issues on his overclocking study over 6950 and 6970. His article was published on lab501 (even tried 1.9vgpu and the card is still running) Link

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