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5850 Crossfire help

post #1 of 18
Thread Starter 
I have my crossfire setup installed and I can't play any games without my graphics drivers flipping out or just crashing my computer. I made sure to have crossfire enabled in CCC, I don't know if it matters but I am running dual desktops with one primary display and my desktop extended to the other monitor. I've done some googling and searching and I can't seem to find out what might be causing it.
    
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post #2 of 18
Did you make sure to enable extended desktop first, and then enable crossfire x? In that order? Maybe that will help
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post #3 of 18
you dont have a big enough power supply for crossfired HD 5850's. my Zalman 750 watt psu wasnt enough voltage for my HD5850's, the non-reference cards tend to draw a fair amount more. id say that your lacking the power to keep them running.
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post #4 of 18
Quote:
Originally Posted by Kal777 View Post
you dont have a big enough power supply for crossfired HD 5850's. my Zalman 750 watt psu wasnt enough voltage for my HD5850's, the non-reference cards tend to draw a fair amount more. id say that your lacking the power to keep them running.
I would actually say that he would be able to run them, however it will be tight. He has a quality PSU so he won't run into any problems.
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post #5 of 18
Thread Starter 
Quote:
Originally Posted by Kal777 View Post
you dont have a big enough power supply for crossfired HD 5850's. my Zalman 750 watt psu wasnt enough voltage for my HD5850's, the non-reference cards tend to draw a fair amount more. id say that your lacking the power to keep them running.
Not to sound like a D-bag but they are both reference XFX 5850's at stock. At max I'll use around 600w
    
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post #6 of 18
Quote:
Originally Posted by Kratthew D. Kraids View Post
Not to sound like a D-bag but they are both reference XFX 5850's at stock.
Dude, your PSU is fine for the 5850s. Don't worry.

Check out this thread if you want: http://www.overclock.net/power-suppl...ssfire-i5.html

The guy has a corsair TX-650. Your PSU is of even higher quality.
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post #7 of 18
Thread Starter 
Quote:
Originally Posted by cordawg92 View Post
Dude, your PSU is fine for the 5850s. Don't worry.

Check out this thread if you want: http://www.overclock.net/power-suppl...ssfire-i5.html

The guy has a corsair TX-650. Your PSU is of even higher quality.
lol It's fine I did my research when I was looking for a new PSU I'm trying the enabling extended desktop and then enabling Crossfire.
    
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post #8 of 18
Quote:
Originally Posted by Kal777 View Post
you dont have a big enough power supply for crossfired HD 5850's. my Zalman 750 watt psu wasnt enough voltage for my HD5850's, the non-reference cards tend to draw a fair amount more. id say that your lacking the power to keep them running.
Rubbish. I ran an OC'd Phenom II and two 5850s for the better part of 6 months on a TX650 with no problem. 5850s are power mizers.
post #9 of 18
Thread Starter 
well I just tried playing Cysis and insta crash, even with just one monitor running.
    
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post #10 of 18
Which driver?
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