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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 187

post #1861 of 38721
Just tried 7970 crossfire and it is garbage. Constant BSOD's, freezing, driver's were a ***** to install. Selling 1 of the 7970 and I am gonna stick with 1. mad.gif
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post #1862 of 38721
Quote:
Originally Posted by jamborhgini313 View Post

Just tried 7970 crossfire and it is garbage. Constant BSOD's, freezing, driver's were a ***** to install. Selling 1 of the 7970 and I am gonna stick with 1. mad.gif


Uninstall current drivers then install the drivers supplied with the card in the Disc with both 7970s in the system.

 

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post #1863 of 38721
Quote:
Originally Posted by Ken1649 View Post



Uninstall current drivers then install the drivers supplied with the card in the Disc with both 7970s in the system.

Yup, did that. Crashes 5 mins in BF3 or anything 3D. Stock it crashes too. I'm not going Crossfire anytime soon I guess mad.gif
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post #1864 of 38721
Do both cards work smoothly solo?
post #1865 of 38721
Quote:
Originally Posted by jamborhgini313 View Post

Quote:
Originally Posted by Ken1649 View Post



Uninstall current drivers then install the drivers supplied with the card in the Disc with both 7970s in the system.

Yup, did that. Crashes 5 mins in BF3 or anything 3D. Stock it crashes too. I'm not going Crossfire anytime soon I guess mad.gif


If your Windows updated to the latest including SP1 and related components, restore all your overclock to default. If it still crashes, run Memtest or boot with a single stick and try each of them.

 

Make sure you run both 7970s @x8/x8 and remove all devices from PCI slots.

 

Check PCIe power cables from PSU to the cards.

 

There's no other reason it shouldd crash if each card works fine at its own. 
 

 

 

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post #1866 of 38721
Everything is updated. And it is not my RAM. I had 580's in SLI before and it worked fine. My PSU is not the problem because I've tried the other 12v rails aswell. I have no other devices in PCIE slots except the cards of course. Oh well, it's ok. I'll just stick with 1 card
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post #1867 of 38721
Quote:
Originally Posted by Ken1649 View Post



If your Windows updated to the latest including SP1 and related components, restore all your overclock to default. If it still crashes, run Memtest or boot with a single stick and try each of them.

Make sure you run both 7970s @x8/x8 and remove all devices from PCI slots.

Check PCIe power cables from PSU to the cards.

There's no other reason it shouldd crash if each card works fine at its own. 

 


Why remove PCI device? Is it because all pci devices will destroy the stability of gpu / reduce performance?
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post #1868 of 38721
Have you tried both cards on their own? Both work fine individually?

Have you been using the January 19th drivers? Have you cleaned the old drivers using Driver Sweeper?

I assume you've done this but since you're coming from the NVIDIA cards, there might be a chance of some driver mishap, especially since 7970 drivers are still Beta.
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post #1869 of 38721
Quote:
Originally Posted by chropose View Post

Quote:
Originally Posted by Ken1649 View Post



If your Windows updated to the latest including SP1 and related components, restore all your overclock to default. If it still crashes, run Memtest or boot with a single stick and try each of them.

Make sure you run both 7970s @x8/x8 and remove all devices from PCI slots.

Check PCIe power cables from PSU to the cards.

There's no other reason it shouldd crash if each card works fine at its own. 

 
 

Why remove PCI device? Is it because all pci devices will destroy the stability of gpu / reduce performance?


 

If you look at his board, all PCI and PCIe are sharing resources;

 

 

Capture1.JPG
 

 

As for performance impacts due to lanes disparity, have a look here;

 

 
 

 

 

 

ケンジ
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Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
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ケンジ
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120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
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post #1870 of 38721
Quote:
Originally Posted by wirefox View Post

sorry if this is a naive thought...
does monitor size affect how well you can clock and volt a card?
You have a pretty big monitor...

I don't think resolution matters when overclocking my 7970. Also, OCCT default mode is like 1024 x 768 resoultion.
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