Help! No crossfire option in CCC

[wilem_WAR246810]

Hi I've just bought a 7770 to temporarily crossfire it with my 7750, I know it would downscale itself to match the 7750 but it's only till I sell the latter or give 7770 an identical partner.

For now it'd be nice to take advantage of a temporary 7750x2 crossfire, which is notably faster than just one 7770, I know it should work in fact, my two cards are from the same brand and even look very similar, AMD's site says it would and some people reported it works. But the problem is I cant see crossfire option under performance and gaming tab in CCC 13.12.

I've tried uninstalling using AMD install manager and selecting all through custom, rebooting, using driver fusion to get rid of AMD display(without premium), rebooting, installing CCC 13.12 again, rebooting and it didn't work.

Would anyone know a solution?

 

[Xibyth]

You need a CrossFire cable connecting the two cards, and it looks like one of the cards in your pic doesn't have a connector, so I don't believe the bottom card is cross fire capable. In addition you must use the same GPU(e.g. two 7750's, OR two 7770's). They must also have matching memory capacities (e.g. 1GB or 2GB). AMD's website has everything you need to know about the requirements for a CrossFire setup.

 

[wilem_WAR246810]

http://sites.amd.com/PublishingImages/Public/Graphic_Illustrations/WebBannerJPEG/AMD_CrossfireX_Chart_532W.jpg
According to the site, I can do it, even without the bridge, they're both 1GB also

 

[jossrik]

The bottom card needs a crossfire connector, else, no works. The new R9 290, 290x don't need the connector, but the 7XXX series does. The other guy is a bit confused, for SLI you need the same card, but crossfire you just need the same chip, you are correct that a 7750 will crossfire with a 7770, but it will drop to 7750 performance. BUT, both cards need to be crossfire ready, and that bottom one is not ready.

 

[wilem_WAR246810]

Alright it seems the AMD pic did say for people attempting (e.g. 7770+7750) both need an external AMD-.... guessing partly the reason I committed this error is that they didn't write anything past "AMD", it would probably be "bridge connector". Oh well it's only temporary, I'm gonna sell the 7750 now