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ATI Crossfire 6870 Issue?

post #1 of 8
Thread Starter 
I've just recently built a new system, specs are as follows

I5 2500k 3.3Ghz
Asus P8Z68-VLX Mobo
8GB 1333Mhz Ram

and a couple 6870's.

The issue I am having is that the second card in the crossfire setup is running at full memory and core clock speeds, instead of defaulting back to low performance mode like the other card does.

I've disabled the i5 inbuilt gpu in bios to see if that was causing the issue, as I had been running VIRTU. It would appear that it has nothing to do with that.

I've also tried swapping the cards between the two PCI-E slots, this resulted in the same issue, only with the other card. So I know the cards are not at fault.

It's worth mentioning that I'm running Crossfire in a PCI-E x16 slot and a PCI-E x4 slot, and it's the card that's in the x4 slot that runs in performance mode when it should be idle.

anyone have any suggestions? thanks in advance.thumb.gif

Card in the PCI-E x16 slot at idle
f09.png
Card in the PCI-E x4 slot at idle
7vu.png
Edited by Colt45268 - 4/12/12 at 6:16am
post #2 of 8
How many monitors?
And why are you running 16/4x?
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post #3 of 8
Thread Starter 
Unfortunately the motherboard specs on the retailers website somewhat deceived me, claiming that the board had two PCI-E x16 ports, when one of them is infact a PCI-E x4

I'm running on a single monitor.
post #4 of 8
What drivers are you using ?

I get the same thing in 12.3 and 12.4 drivers.
The 2nd card will go in idle mode again after it had some 3D load.
Go try it and see for yourself, run something like a 3Dmark11 and when done you will see the 2nd card goes into idle mode.
Why it does that i dont know, prolly a driver issue.
I didnt have these problems with the 12.1 driver.
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post #5 of 8
Thread Starter 
Ok, i've just tested it with a game and it did exactly as you said. The second card lowered its clock and memory as soon as I closed the game! thumb.gif

Should I proceed to uninstall the drivers and install the older ones?
post #6 of 8
Quote:
Originally Posted by Colt45268 View Post

Ok, i've just tested it with a game and it did exactly as you said. The second card lowered its clock and memory as soon as I closed the game! thumb.gif
Should I proceed to uninstall the drivers and install the older ones?

11.9 and 12.1 always have worked very good for me on the 6xxx series.

Try again when 12.4 is out.
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post #7 of 8
Thread Starter 
I've downgraded the graphics drivers and all is well, thanks for the assistance!
post #8 of 8
thumb.gif
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Black storm
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RAMHard DriveHard DriveHard Drive
16GB 2400mhz CL9 Ripjaws Samsung 951 NVME 256GB 250GB SSD Samsung 840 Seagate 7200rpm 3TB 
Hard DriveCoolingCoolingCooling
Seagate 7200rpm 3TB Watercool Heatkiller 3.0 Copper MagiCool Elegant plexi full copper 120mm rad. MagiCool Elegant plexi full copper 240mm rad 
CoolingCoolingCoolingCooling
Lamptron FC5 V2 fan-controller AlphaCool VP655 Pump + Plexi Top EK Spin Bay resevoir 3x Scythe Gentle Typhoon's 1450rpm 
CoolingOSMonitorKeyboard
6x Enermax Cluster White 1200rpm Windows 10 Iiyama Prolite E2773HDS 27inch - 47inch LG TV Corsair K60 - Razor BlackWidow Stealth - Logite... 
PowerCaseMouseMouse Pad
Corsair RM1000i Corsair AIR540 Logitech G502 Corepad xxxl 
AudioAudioAudioAudio
Musical Fidelity V-Dac II Reloop Direct Drive Turntable with Ortofon Conc... 2x Adam A5X Studio Monitors BeyerDynamic DT990 Pro 250ohm 
AudioAudioAudioOther
Audioquest Nighthawk Lehmann Audio Linear Headphone Amp Sennheiser HD650 Musical Fidelity V-PSU 
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AMD E-350 Asus E35M1-M 4GB DDR3 Kingston 1333mhz  1,5TB wester digital green 
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640GB WD Caviar blue 500GB Samsung Spinpoint Samsung Dvd-rewriter windows xp sp2 
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