asrock fatal1ty 990fx killer xfire hd 6950 issues

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ognerdy

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Apr 2, 2014
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new asrock fatal1ty 990fx killer mobo,8gigs gskill 1600 ram,850w seagate psu,8350fx cpu,x2 hd6950. only one card is working in crossfire i've tried all of the normal things when this sort of thing happens but cant get it running even after i wiped the hard drive and reinstalled everything. any suggestions would be great thanks also every thing worked fine in my old mother board it was a biostar ta990fxa.
 
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lfkfkfkffs

lfkfkfkffs

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That is a really good motherboard, when I looked on amazon and newegg it had 5 stars. Maybe someone didn't handle it right in shipping and caused a problem. the only negative review that I could find was something saying the pci-e slots were bad so they had to rma it
 
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ognerdy

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Also tried that no change ... Could the 6950's with the 8350 be drawing to much power? I would think it would crash or blue screen if that was the case though.
 
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lfkfkfkffs

lfkfkfkffs

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They are all fairly power hogs. Are you running everything at stock? normally you can crossfire with a 750w power supply. it could also be using to much power on your rails. What processor did you have before? the 8350 draws a lot of power.
 
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ognerdy

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Apr 2, 2014
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(ell before I had the 8350 I had a 955 running at 4.4ghz but I have been using a 8350 for a yr now. the biostar ta990fxa was sort of ify (crisys3 would completely crash) with this setup but i figured it was all the cheap board. I had read that some of those boards had problems with the 8350 so I bought this board ... My friend is running an i5k haswel with 2. 6950's on 800w...
 
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lfkfkfkffs

lfkfkfkffs

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well you have 840 watts on the 12v rail and the 8350 will take up 95 of that. and then you have about from what you have told me adding the 2 video cards and then the hard drive those consume 624watts total. just on the 12v rail not including any overclocks with overclocks on just the processor I would guess it would make it 700watts max. just try disconnection everything even try using the stock cooler after you set the fx 8350 to stock if it isn't already. So just the core components that you really need but with your cards in crossfire. just keep the cards and the hard drive connected to the power supply. if you still are not able to run your cards in crossfire it still could mean that it is a power supply issue, but it could also be a motherboard issue. What I would do is find a power supply that has a good warranty on it, and use it and see if it helps. if not I would assume that it is a motherboard issue.
 
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wasile

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May 24, 2014
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The fx 8350 is greedy, it draws 47 watts/core in full load, meaning a total of 188w. My 1000w Flower PSU, hardly stands it.

 
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