RX580 CrossFire not working

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radeon_rx480

Commendable
Dec 13, 2016
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1,510
I am trying to use CrossFire and my second Radeon RX 580 is not recognized by my motherboard (AsRock X470 Master SLI/AC.) Both cards are MSI Radeon RX 580s, and the CPU is the Ryzen 5 2400G. I currently have 16GB of Kingston HyperX Fury DDR4-3466 installed. I am using a 750W EVGA 750 G2 PSU. Both cards work fine in the top slot but I cannot get the motherboard to recognize either card in the bottom slot. Even if I use the card in the bottom slot and I remove the one in the top slot, I will not get any video output from the second card regardless of which one it is.
 
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radeon_rx480

Commendable
Dec 13, 2016
8
0
1,510
That's what I'm saying, the second GPU isn't recognized by the motherboard. I can't enable it in the AMD settings for this reason. I have tried installing one graphics card and putting it in the second slot. I will get no video output from the slot but it works fine in the first slot. I'm not sure if the second slot is dead or something but I hope not.
 
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radeon_rx480

Commendable
Dec 13, 2016
8
0
1,510


Hmmm. Any idea what else it could be?
 
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WildCard999

WildCard999

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Jul 18, 2014
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Considering you've tried the second slot with no video that's what I'd suspect, sorry it's kind of crappy as you'll need to RMA the board.
 
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radeon_rx480

Commendable
Dec 13, 2016
8
0
1,510


Hmmm, the fan does come on, is that any possibility that it's not the slot?
 
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WildCard999

WildCard999

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Moderator
Jul 18, 2014
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It doesn't take much to run the fan, contact Asrock (link above) before RMA.
 
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