Topic Title: Crossfire 7950s Second Card never idling
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Created On: 09/07/2013 02:15 AM
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 09/07/2013 02:15 AM
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Mikeakajb
Peon

Posts: 9
Joined: 08/28/2013

System Specs

I5-3570k (Stock settings)

Asrock H77M Motherboard

16 gigs of 1333 mhz ddr3 ram

2 x Gigabyte Amd 7950s

Cosair cx750m PSU

7x 120 mm fans

212 Evo HeatSink

~~~~~~~~~~~

After much head ache of installing and uninstalling drivers constantly I finally was able to get my crossfired gigabyte 7950s from rebooting to the black screen with the blinking cursor in the top left.

Now I was checking with GPU-Z for temps and such and noticed that the second card is running in the boost state 100% of the time at 1000 mhz core clock and 1250 mhz memory clock.  The primary card seems to go into idle / low state and drops to 300 mhz Core Clock and 150 mhz memory Clock

 

If I disengage crossfire both cards drop to the idle state of 300 mhz core and 150 mhz memory.

 

Why does enabling crossfire automatically kick the second card into high gear even if I'm not doing anything but say writing this message or reading articles on the internet?

 

I have overdrive disables for both cards as well.  When I read CCC it says the second card is at 99% activity level with a 65% fan speed and 0 power with a temperature of 59 C

 

Are this misreads or true?  They seem to match what Gpu Z is stating is occurring

 09/08/2013 10:28 AM
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deathcrush87
Grinding Levels

Posts: 170
Joined: 08/17/2013

thats totally normal, dont worry about it.

my 2x7870s are the same as you described.



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 09/11/2013 11:18 PM
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Mikeakajb
Peon

Posts: 9
Joined: 08/28/2013

With the new 13.10 beta drivers I now have a new issue.  Every once in awhile the second card will get deactivated and I have to keep re installing the 13.1 beta drivers.

 

 

 09/19/2013 08:53 AM
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kingbob2
Peon

Posts: 1
Joined: 09/19/2013

Same thing happened to me. Just had to disable ULPS (the power saver thing that is supposed to practically shut off the second card when not in use)

 

http://forums.amd.com/game/messageview.cfm?catid=444&threadid=166552&enterthread=y

 09/19/2013 09:40 AM
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stumped
Wizard

Posts: 7075
Joined: 11/13/2009

There is a lot of information in the FAQ for people who take the effort to peruse it.



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 * A clear conscience is usually a sign of bad memory *

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