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Started by Rawhide15 | | 19 answers
I can't get crossfirex to work for the life of me.. Please help.
Hello,

My name is Adam, I am having the worst time trying to get crossfire to work. I am using 2 Sapphire 7870's. Both cards work properly in the ports they are in. My motherboard is an Asus Sabertooth 990Fx r2.0. My power supply is a corsair cx750m. I've tried uninstalling drivers and reinstalling. Did not resolve the issue. I have tried 2 different crossfire bridges however neither worked.

Please send help :( 
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October 2, 2014 10:59:41 PM

that is also possible, stick on both the connectors at once and see what that does.
October 2, 2014 10:33:19 PM

unknownofprob said:
if you try one card at a time and they both work in the same slot (ONLY use one at a time), then the cards are fine.


They do work, however is it possible for just the crossfire port not to work on them?
October 2, 2014 10:31:43 PM

if you try one card at a time and they both work in the same slot (ONLY use one at a time), then the cards are fine.
October 2, 2014 8:30:33 PM

Ya know what, my best assumption is that I have a faulty port on one of the two cards.. It seems like the most likely cause
October 2, 2014 8:13:12 PM

Unfortunately, I do not.. This is frustrating.. I'm gonna call Asus support to maybe get an RMA. However, I am not giving up. If anyone has any ideas please chime in.
October 2, 2014 8:11:37 PM

if you have another cooler then try use that (Supported by socket).
October 2, 2014 8:07:20 PM

I do have 3 mobo's here to test off of, 2 of which are the supposed faulty ones, the third is an Asus m5a97 r2.0. However, not really looking that forward to taking my H100i out...... again...
October 2, 2014 8:04:16 PM

When it's hardware we are severely limited with testing.

You could try clearing your CMOS then re-installing your cards after.
October 2, 2014 8:02:40 PM

Alas, up here in small town ND we don't have any repair shops.. any suggestion on test I could run myself?
October 2, 2014 8:01:55 PM

I would go to a repair shop and get that Sabertooth tested, Sounds like you have got a fault product on two occasions, unfortunately.

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