Crossfire With HD5750 and HD6790

[stev2511]

So, I am trying to crossfire the SAPPHIRE HD5750 and SAPPHIRE HD6790. I got a GIGABYTE GA-P55-UD3R motherboard with a PCI-E x16 and a PCI-E x4. I installed the latest catalyst version as well as the drivers for both cards. I have the HD5750 connected to the PCI-E x4 and the HD6790 to the PCI-E x16 slot. I connected them with the crossfire bridge but when I open the catalyst control center there is no tab to enable crossfire. I checked with GPU-Z and both cards are clickable but the crossfire status is disabled. What should I do? Thank you in advance.

 

[striker410]

Nope, they do not crossfire. You must have either identical cards, or cards from the same series (ie 5850 and 5870) it's impossible to crossfire a 5750 with 6790. Sorry mate.

 

[stev2511]

Damn seller I gave him my pc specifications as I suspected that they wouldn't be compatible if they are different models for crossfire but he assured me they do...

 

[striker410]

Hmm. I would attempt to return it. They most certainly will not crossfire together.

 

[stev2511]

There is no way I am keeping it since I was specific to them about why I need it. I'll return it. Thank you for your quick reply and your help!

 

[striker410]

No problem. It's always a shame to see people sell something, even if they know they are lying. If you'd be so kind could you select me as best answer?

 

[Deemo13]

This chart shows which cards can be crossfired together. Just thought it might help the discussion a bit.

 

[Mousemonkey]

Best answer selected by mousemonkey.

 

[Mousemonkey]

This topic has been closed by Mousemonkey