Radeon HD 5970 barely using second GPU

RoadKill94

Junior Member
Mar 17, 2013
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0
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D7sOKmS.png


Hello, i think i may have a problem.
Years after i got my pc i have now started overclocking.
I am running FurMark right now, and i noticed my second GPU isn't running.
I've seen this before, but i guess i thought it was supposed to be like that or something, but FurMark is supposed to have both running at 100%
I have an i7 860 OC'd from 133Mhz to 150 base clock speed.
There's also another thing, when i have my GPU overclocked, the video drivers crash when the computer awakens from resting mode, hibernation, or whatever it's called.
So yeah, what's the deal here?

EDIT: Ok, something weird just happened, after 30 minutes of running FurMark, my second GPU actually started running
but it says that the second fan is at 0%
I don't even know if my card has two fans man, any help in clarifying some of this stuff would be great!

EDIT2: tried restarting FurMark to see if the second gpu kept running, but nope. Back to what you see in the image above.
Does anyone have any idea why it takes so long for it to kick in?

EDIT3: the fps was the same before/after the second gpu started running.
 
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lavaheadache

Diamond Member
Jan 28, 2005
6,893
14
81
first off.... Stop using Furmark. Amd and Nvidia have been designing their drivers to combat that program. All it does is break stuff.
 

Jacky60

Golden Member
Jan 3, 2010
1,123
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Don't use furmark or Kombustor or any programs designed to fry cards. Proceed normally.
 

RoadKill94

Junior Member
Mar 17, 2013
6
0
0
Don't use furmark or Kombustor or any programs designed to fry cards. Proceed normally.

Yeah, i got that now.
I read a guide somewhere that said to use FurMark, but whatever, i won't use it anymore from now on.

But that doesn't change the fact that only half of my 5970 is seemingly working.
What do you mean by "proceed normally"? Should i just not care if only half of my power is being used?
I realize that i seem clueless, and i kind of am, so Your answers aren't of much help to me.
 

GodisanAtheist

Diamond Member
Nov 16, 2006
7,479
8,253
136
Use another benchmarking program to test your over locks is what they're trying to say.
Uniengine Heaven is a popular free one, any of the 3d mark suites from Vantage up are good too.
AMD and NVIDIA have a bunch of junk in their drivers trying to keep furmark from frying cards and that might be causing your problems. Also make sure you're running the latest driver revision.
 

RoadKill94

Junior Member
Mar 17, 2013
6
0
0
Use another benchmarking program to test your over locks is what they're trying to say.
Uniengine Heaven is a popular free one, any of the 3d mark suites from Vantage up are good too.
AMD and NVIDIA have a bunch of junk in their drivers trying to keep furmark from frying cards and that might be causing your problems. Also make sure you're running the latest driver revision.

I'm downloading Heaven as i'm typing this. I have the latest AMD drivers, but not the beta version. Should i upgrade to the beta?
 

RoadKill94

Junior Member
Mar 17, 2013
6
0
0
Use another benchmarking program to test your over locks is what they're trying to say.
Uniengine Heaven is a popular free one, any of the 3d mark suites from Vantage up are good too.
AMD and NVIDIA have a bunch of junk in their drivers trying to keep furmark from frying cards and that might be causing your problems. Also make sure you're running the latest driver revision.

While running Heaven GPU 1 was at 96% and GPU 2 at 0-15%
Arma 2 and 3 alpha showed the same results, gonna try BF3 now.

Allright, both GPU's were loaded at 99% in BF3, success! (?)
 
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FalseChristian

Diamond Member
Jan 7, 2002
3,322
0
71
The 2nd card is only used when needed. For instance I get around 1000 fps in Quake HD with or without SLI. Don't worry about. When the 2nd GPU is needed it will be used.
 

Termie

Diamond Member
Aug 17, 2005
7,949
48
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www.techbuyersguru.com
Crossfire doesn't work in windowed mode.

That explains most of your issues. Arma probably has a driver problem. That explains the rest.

People who say the second GPU only runs when needed are unfortunately wrong. That is not how crossfire works. Both GPUs will decrease in usage equally when presented with a low load.
 
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