Topic Title: HD 7970 in XfireX and Heat
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Created On: 04/22/2014 05:05 PM
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 04/22/2014 05:05 PM
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jhookusa
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Hey everyone, it's been a while but I thought I might hang out hear for a bit as I am curious.  I have 2 HD 7970 in XfireX and I am seeing the one card hit above 70c during gaming.  This to me is too hot.  Running a 990fxa GD65 MoBo and the cards are close together in the slots.  That might explain the heat, but any suggesitons to get these cards cooler would be appreciated.  Not experincing too much problems, other than an occasional lock up, or shut down.  Everything seems fine.  Any suggestions?

 

Also, I do not get information on second card, such as temp and fan control in CCC.  Is that normal?



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My current (Typhoon) rig; MSI 990fxa-GD-65, AMD FX (4 x 4.2Ghz), (2) XFX HD7970 XOC @ Xfire, 16Gigs Corsar 1600Mhz FBS RAM, Recon 3D SB, 1200w Thermaltake PS, 500 Gig x 1 Tera SATA HD's, 26" ASUS Widescreen, Windows 7 x64 Ultimate



Edited: 04/22/2014 at 06:37 PM by jhookusa
 04/22/2014 11:48 PM
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UcouldBrong
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Typically, the top card will run a few degrees C hotter than the bottom card.  ~70-75C is not troublesome for this card.  I also have a couple of these and adjust the fan speeds manually (ex:  50% and 46%) in CCC to even them out.  Be sure CF is enabled.  Every six months or so...swap card positions to even load and wear on them.

Is it showing the Crossfire logo ingame?

Do you have a "smaller" Catalyst icon in the toolbar to your right?  Right click it and pass your mouse pointer over where it says "AMD Radeon HD 7900 series..."

If you have room in your optical bay you can wrap insulating tape around a PWM 120mm fan to make a bulkhead in the bay and have the fan blow cool outside air across the mobo and cards.

You can velcro a PWM 120mm fan to the exhaust area of the cards outside the case to directly assist removal of the hot air from the cards.  Connect these cards to your fan controller for adjustment as needed.

Research positive/negative case airflow.

Monitor temps and provide additional cooling for your cpu...helps cool the mobo a bit as well.

You can upgrade your case fans with with quieter but much more powerful (better CF/pressure specs).

Keep everything pristine in the case.  Lower ambient temps if possible.

Raise case off the floor if possible...much cleaner airflow.  My gaming case is in an ajoining hallway...barely hear it.

 



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Non-noob components.



Edited: 04/22/2014 at 11:54 PM by UcouldBrong
 04/23/2014 01:01 AM
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jhookusa
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Originally posted by: UcouldBrong Typically, the top card will run a few degrees C hotter than the bottom card.  ~70-75C is not troublesome for this card.  I also have a couple of these and adjust the fan speeds manually (ex:  50% and 46%) in CCC to even them out.  Be sure CF is enabled.  Every six months or so...swap card positions to even load and wear on them.

 

Is it showing the Crossfire logo ingame?

 

Do you have a "smaller" Catalyst icon in the toolbar to your right?  Right click it and pass your mouse pointer over where it says "AMD Radeon HD 7900 series..."

 

If you have room in your optical bay you can wrap insulating tape around a PWM 120mm fan to make a bulkhead in the bay and have the fan blow cool outside air across the mobo and cards.

 

You can velcro a PWM 120mm fan to the exhaust area of the cards outside the case to directly assist removal of the hot air from the cards.  Connect these cards to your fan controller for adjustment as needed.

 

Research positive/negative case airflow.

 

Monitor temps and provide additional cooling for your cpu...helps cool the mobo a bit as well.

 

You can upgrade your case fans with with quieter but much more powerful (better CF/pressure specs).

 

Keep everything pristine in the case.  Lower ambient temps if possible.

 

Raise case off the floor if possible...much cleaner airflow.  My gaming case is in an ajoining hallway...barely hear it.

 

 

 

 

Thanks, but I have a good high speed fan right on the side where both cards are at.  If 70 to 75c is fine, then there is no issue I guess.  Just seems a bit hot.  I disable Xfire when gaming with games that do not work properly (for one reason or another) in Xfire.

I can not adjust anything for the second card.  It shows up in the "overdrive" section, but when I click on it, I can not see any temps or power usage info.  Seems odd to me that you can not see any values for the second card.



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My current (Typhoon) rig; MSI 990fxa-GD-65, AMD FX (4 x 4.2Ghz), (2) XFX HD7970 XOC @ Xfire, 16Gigs Corsar 1600Mhz FBS RAM, Recon 3D SB, 1200w Thermaltake PS, 500 Gig x 1 Tera SATA HD's, 26" ASUS Widescreen, Windows 7 x64 Ultimate



Edited: 04/23/2014 at 01:07 AM by jhookusa
 04/23/2014 11:15 AM
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UcouldBrong
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Well, you asked how you could get the cards to run cooler...

 

Uninstall, clean, reinstall.

BTW...where does PWRCONN1 connect to?



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Non-noob components.



Edited: 04/23/2014 at 11:28 AM by UcouldBrong
 04/29/2014 03:32 AM
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jhookusa
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Originally posted by: UcouldBrong Well, you asked how you could get the cards to run cooler...

 

 

 

Uninstall, clean, reinstall.

 

BTW...where does PWRCONN1 connect to?

 

Just upgraded to the 14.4 drivers.  For some reason, my GFX cards are running a bit cooler now.  STRANGE. 

I just purchased a 95cfm fan for the side fan (right next to the 2 gfx cards).  I will see if that helps to keep them cool.

 

Are you asking about the MoBo CONN1 power terminal?



-------------------------

My current (Typhoon) rig; MSI 990fxa-GD-65, AMD FX (4 x 4.2Ghz), (2) XFX HD7970 XOC @ Xfire, 16Gigs Corsar 1600Mhz FBS RAM, Recon 3D SB, 1200w Thermaltake PS, 500 Gig x 1 Tera SATA HD's, 26" ASUS Widescreen, Windows 7 x64 Ultimate

 04/29/2014 12:18 PM
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UcouldBrong
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That's the one...



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Non-noob components.

 04/30/2014 07:53 PM
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jhookusa
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Originally posted by: UcouldBrong That's the one...

 

It was hooked up to the PSU.  Stupid me!  Anyway, since it only provides power and power was hooked up to it, there is no damage.  I still feel like an idiot!  Anyway, both cards are hooked up to the PSU.  Not to any direct connection to the mainboard.  New 95CFM fan on the side, and the GPU temp is still around 44c at idle.  To me, it is a bit hot, especially at an idle.  But, if thses cards run hot, then that explains it.



-------------------------

My current (Typhoon) rig; MSI 990fxa-GD-65, AMD FX (4 x 4.2Ghz), (2) XFX HD7970 XOC @ Xfire, 16Gigs Corsar 1600Mhz FBS RAM, Recon 3D SB, 1200w Thermaltake PS, 500 Gig x 1 Tera SATA HD's, 26" ASUS Widescreen, Windows 7 x64 Ultimate

 05/01/2014 12:42 AM
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UcouldBrong
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Yeah...it IS to provide ADDITIONAL power to the cards via the motherboard when Crossfiring.



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Non-noob components.

 05/01/2014 04:20 PM
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jhookusa
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Originally posted by: UcouldBrong Yeah...it IS to provide ADDITIONAL power to the cards via the motherboard when Crossfiring.

 

 

Are you saying that I should hook up the powerconn 1 to the main card?  Why?  My PSU handles them just fine.  Plus, the rails supply plenty of wattage/amperage to these babies.  So, why would I hook up a mainboard power connection to the card?



-------------------------

My current (Typhoon) rig; MSI 990fxa-GD-65, AMD FX (4 x 4.2Ghz), (2) XFX HD7970 XOC @ Xfire, 16Gigs Corsar 1600Mhz FBS RAM, Recon 3D SB, 1200w Thermaltake PS, 500 Gig x 1 Tera SATA HD's, 26" ASUS Widescreen, Windows 7 x64 Ultimate

 05/02/2014 01:03 AM
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UcouldBrong
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NO!!!

That connector provides additional power to the motherboard when using multiple gpus!  Most mobos are limited to 75 watts per PCIe slot...this gives extra power in case they need it in addition to your 6/8 pin power connectors.



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Non-noob components.

 05/02/2014 05:50 PM
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jhookusa
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Yea,

I kinda figured that.



-------------------------

My current (Typhoon) rig; MSI 990fxa-GD-65, AMD FX (4 x 4.2Ghz), (2) XFX HD7970 XOC @ Xfire, 16Gigs Corsar 1600Mhz FBS RAM, Recon 3D SB, 1200w Thermaltake PS, 500 Gig x 1 Tera SATA HD's, 26" ASUS Widescreen, Windows 7 x64 Ultimate

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