Topic Title: Crossfire Help 7870 & 7850
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Created On: 12/10/2013 12:36 PM
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 12/10/2013 12:36 PM
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Posts: 4
Joined: 12/10/2013

I need your help.

The other day I posted this describing my new crossfire setup.

Today I am running a single card due to some difficulties I have been having.

Here are some details:

I am trying to crossfire a 7870 and a 7850 using this motherboard and a 750 watt Rosewill Hive PSU and an i5 3470 3.2 GHz CPU.

When I first set this up I was only using CCC and I was getting 60 FPS on BF4 with all settings on ultra with AA on

I took the advice of an individual that commented on my original post and downloaded RadeonPro, this is when things started going south. My FPS dropped to 40

I uninstalled RP and downloaded MSI afterburner, overclocked my 7850 to match the 7870. It seemed to help a little bit but I was getting some artifacts on the right side of my windows start-up screen. I down-clocked my 7870 lower than my 7850. This helped for a couple games but I started getting the 40 FPS again. Would putting my 7870 in the bottom, 2.0x4 lane help at all? 


I am using the latest AMD beta drivers



What can I do to fix this so I can use both cards instead of having one in a box?

Thank you so much for your help!

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