Someone should delete this post
I have a similar problem. I use to have three R9 290's in crossfire. I then switched to two R9 390x's. The new driver only utilises one card. It shows no option in the additional settings tab to enable crossfire. I am currently only using one card, when I have two. The extra power is just sitting there dormant. Please respond soon.
i never got the chance to use an older driver because the ones that i downloaded always crashed my windows. Our problems are very similar i hope someone will help us out soon
I've already made an other post about this, and someone is currently helping me, check it out I need help, very bad performance and crossfire problems
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